CLEANUP: Fix HCHK spelling errors
[RELEASE] Released version 1.5-dev8

Released version 1.5-dev8 with the following main changes :
    - MINOR: patch for minor typo (ressources/resources)
    - MEDIUM: http: add support for sending the server's name in the outgoing request
    - DOC: mention that default checks are TCP connections
    - BUG/MINOR: fix options forwardfor if-none when an alternative header name is specified
    - CLEANUP: Make check_statuses, analyze_statuses and process_chk static
    - CLEANUP: Fix HCHK spelling errors
    - BUG/MINOR: fix typo in processing of http-send-name-header
    - MEDIUM: log: Use linked lists for loggers
    - BUILD: fix declaration inside a scope block
    - REORG: log: split send_log function
    - MINOR: config: Parse the string of the log-format config keyword
    - MINOR: add ultoa, ulltoa, ltoa, lltoa implementations
    - MINOR: Date and time fonctions that don't use snprintf
    - MEDIUM: log: make http_sess_log use log_format
    - DOC: log-format documentation
    - MEDIUM: log: use log_format for mode tcplog
    - MEDIUM: log-format: backend source address %Bi %Bp
    - BUG/MINOR: log-format: fix %o flag
    - BUG/MEDIUM: bad length in log_format and __send_log
    - MINOR: logformat %st is signed
    - BUILD/MINOR: fix the source URL in the spec file
    - DOC: acl is http_first_req, not http_req_first
    - BUG/MEDIUM: don't trim last spaces from headers consisting only of spaces
    - MINOR: acl: add new matches for header/path/url length
    - BUILD: halog: make halog build on solaris
    - BUG/MINOR: don't use a wrong port when connecting to a server with mapped ports
    - MINOR: remove the client/server side distinction in SI addresses
    - MINOR: halog: add support for matching queued requests
    - DOC: indicate that cookie "prefix" and "indirect" should not be mixed
    - OPTIM/MINOR: move struct sockaddr_storage to the tail of structs
    - OPTIM/MINOR: make it possible to change pipe size (tune.pipesize)
    - BUILD/MINOR: silent a build warning in src/pipe.c (fcntl)
    - OPTIM/MINOR: move the hdr_idx pools out of the proxy struct
    - MEDIUM: tune.http.maxhdr makes it possible to configure the maximum number of HTTP headers
    - BUG/MINOR: fix a segfault when parsing a config with undeclared peers
    - CLEANUP: rename possibly confusing struct field "tracked"
    - BUG/MEDIUM: checks: fix slowstart behaviour when server tracking is in use
    - MINOR: config: tolerate server "cookie" setting in non-HTTP mode
    - MEDIUM: buffers: add some new primitives and rework existing ones
    - BUG: buffers: don't return a negative value on buffer_total_space_res()
    - MINOR: buffers: make buffer_pointer() support negative pointers too
    - CLEANUP: kill buffer_replace() and use an inline instead
    - BUG: tcp: option nolinger does not work on backends
    - CLEANUP: ebtree: remove a few annoying signedness warnings
    - CLEANUP: ebtree: clarify licence and update to 6.0.6
    - CLEANUP: ebtree: remove 4-year old harmless typo in duplicates insertion code
    - CLEANUP: ebtree: remove another typo, a wrong initialization in insertion code
    - BUG: ebtree: ebst_lookup() could return the wrong entry
    - OPTIM: stream_sock: reduce the amount of in-flight spliced data
    - OPTIM: stream_sock: save a failed recv syscall when splice returns EAGAIN
    - MINOR: acl: add support for TLS server name matching using SNI
    - BUG: http: re-enable TCP quick-ack upon incomplete HTTP requests
    - BUG: proto_tcp: don't try to bind to a foreign address if sin_family is unknown
    - MINOR: pattern: export the global temporary pattern
    - CLEANUP: patterns: get rid of pattern_data_setstring()
    - MEDIUM: acl: use temp_pattern to store fetched information in the "method" match
    - MINOR: acl: include pattern.h to make pattern migration more transparent
    - MEDIUM: pattern: change the pattern data integer from unsigned to signed
    - MEDIUM: acl: use temp_pattern to store any integer-type information
    - MEDIUM: acl: use temp_pattern to store any address-type information
    - CLEANUP: acl: integer part of acl_test is not used anymore
    - MEDIUM: acl: use temp_pattern to store any string-type information
    - CLEANUP: acl: remove last data fields from the acl_test struct
    - MEDIUM: http: replace get_ip_from_hdr2() with http_get_hdr()
    - MEDIUM: patterns: the hdr() pattern is now of type string
    - DOC: add minimal documentation on how ACLs work internally
    - DOC: add a coding-style file
    - OPTIM: halog: keep a fast path for the lines-count only
    - CLEANUP: silence a warning when building on sparc
    - BUG: http: tighten the list of allowed characters in a URI
    - MEDIUM: http: block non-ASCII characters in URIs by default
    - DOC: add some documentation from RFC3986 about URI format
    - BUG/MINOR: cli: correctly remove the whole table on "clear table"
    - BUG/MEDIUM: correctly disable servers tracking another disabled servers.
    - BUG/MEDIUM: zero-weight servers must not dequeue requests from the backend
    - MINOR: halog: add some help on the command line
    - BUILD: fix build error on FreeBSD
    - BUG: fix double free in peers config error path
    - MEDIUM: improve config check return codes
    - BUILD: make it possible to look for pcre in the default system paths
    - MINOR: config: emit a warning when 'default_backend' masks servers
    - MINOR: backend: rework the LC definition to support other connection-based algos
    - MEDIUM: backend: add the 'first' balancing algorithm
    - BUG: fix httplog trailing LF
    - MEDIUM: increase chunk-size limit to 2GB-1
    - BUG: queue: fix dequeueing sequence on HTTP keep-alive sessions
    - BUG: http: disable TCP delayed ACKs when forwarding content-length data
    - BUG: checks: fix server maintenance exit sequence
    - BUG/MINOR: stream_sock: don't remove BF_EXPECT_MORE and BF_SEND_DONTWAIT on partial writes
    - DOC: enumerate valid status codes for "observe layer7"
    - MINOR: buffer: switch a number of buffer args to const
    - CLEANUP: silence signedness warning in acl.c
    - BUG: stream_sock: si->release was not called upon shutw()
    - MINOR: log: use "%ts" to log term status only and "%tsc" to log with cookie
    - BUG/CRITICAL: log: fix risk of crash in development snapshot
    - BUG/MAJOR: possible crash when using capture headers on TCP frontends
    - MINOR: config: disable header captures in TCP mode and complain
BUG/MAJOR: log: possible segfault with logformat

Possible zero-pointer deference in sess_log().
Checks of return values in sess_log() fix the issue.

Fix bad computation in logformat_write_string().

This issue is 1.5-specific and was introduced just before 1.5-dev8.
No backport is needed.
BUG/MEDIUM: balance source did not properly hash IPv6 addresses

The hash of IPv6 addresses was not properly aligned and resulted in the
last quarter of the address not being hashed. In practice, this is rarely
detected since MAC addresses are used in the second half. But this becomes
very visible with IPv6-mapped IPv4 addresses such as ::FFFF:1.2.3.4 where
the IPv4 part is never hashed.

This bug has been there forever, since introduction of "balance source" in
v1.2.11. The fix must then be backported to all stable versions.

Thanks to Alex Markham for reporting this issue to the list !
MINOR: contrib/iprange: add a network IP range to mask converter

This tool has remained uncommitted in my development tree for almost a year.
Just minor polish and commit.

It can be used to convert some geolocation IP lists to ACLs.
MINOR: stats admin: allow unordered parameters in POST requests

Previously, the stats admin page required POST parameters to be provided
exactly in the same order as the HTML form.
This patch allows to handle those parameters in any orders.

Also, note that haproxy won't alter server states anymore if backend or server
names are ambiguous (duplicated names in the configuration) to prevent
unexpected results (the same should probably be applied to the stats socket).
CLEANUP: fix typo in findserver() log message

There was a typo in the findserver() log message :
"found" was written "fould".
MINOR: stats admin: use the backend id instead of its name in the form

Proxy ids are unique whereas names can be used several times in the
configuration. In order to prevent the ambiguity, the HTML form now provides
the backend id instead of its name (the name can still be provided in the POST
data).
MINOR: stats admin: reduce memcmp()/strcmp() calls on status codes

memcmp()/strcmp() calls were needed in different parts of code to determine
the status code. Each new status code introduces new calls, which can become
inefficient and source of bugs.
This patch reorganizes the code to rely on a numeric status code internally
and to be hopefully more generic.
MINOR: Add release callback to si_applet
CLEANUP: Fix some minor typos
MEDIUM: session: implement the "use-server" directive

Sometimes it is desirable to forward a particular request to a specific
server without having to declare a dedicated backend for this server. This
can be achieved using the "use-server" rules. These rules are evaluated after
the "redirect" rules and before evaluating cookies, and they have precedence
on them. There may be as many "use-server" rules as desired. All of these
rules are evaluated in their declaration order, and the first one which
matches will assign the server.
MEDIUM: log: add a new cookie flag 'U' to report situations where cookie is not used

This happens when a "use-server" rule sets the server instead.
MEDIUM: http: make extract_cookie_value() iterate over cookie values

This will make the function usable for ACLs.
MEDIUM: http: add cookie and scookie ACLs

The ACL matches rely on the extract_cookie_value() function as used for
for patterns. This permits ACLs to match cookie values based on the cookie
name instead of having to perform substring matching on the cookie header.
CLEANUP: lb_first: add reference to a paper describing the original idea

The original idea behind this implementation has been published in the
paper below :

   http://reports-archive.adm.cs.cmu.edu/anon/2012/CMU-CS-12-109.pdf
MINOR: Add TO/FROM_SET flags to struct stream_interface

[WT: it will make sense to remove SN_FRT_ADDR_SET and to use these
  flags everywhere instead ]
CLEANUP: Fix some minor whitespace issues
MEDIUM: log: split of log_format generation

* logformat functions now take a format linked list as argument
* build_logline() build a logline using a format linked list
* rename LOG_* by LOG_FMT_* in enum
* improve error management in build_logline()
MEDIUM: log: New format-log flags: %Fi %Fp %Si %Sp %Ts %rt %H %pid

%Fi: Frontend IP
%Fp: Frontend Port
%Si: Server IP
%Sp: Server Port
%Ts: Timestamp
%rt: HTTP request counter
%H: hostname
%pid: PID

+X: Hexadecimal represenation

The +X mode in logformat displays hexadecimal for the following flags
%Ci %Cp %Fi %Fp %Bi %Bp %Si %Sp %Ts %ct %pid

rename logformat_write_string() to lf_text()

Optimize size computation