help output: use ≥2 spaces between option and description

... and some other cleanups
help output: minor whitespace edits

Should've been amended in the previous commit but wasn't due to a
mistake.
Curl_disconnect: don't free the URL

The URL is not a property of the connection so it should not be freed in
the connection disconnect but in the Curl_close() that frees the easy
handle.

Bug: http://curl.haxx.se/mail/lib-2014-08/0148.html
Reported-by: Paras S
win32: Fixed WinSock 2 #if

A conditionally compiled block in connect.c references WinSock 2
symbols, but used `#ifdef HAVE_WINSOCK_H` instead of `#ifdef
HAVE_WINSOCK2_H`.

Bug: http://curl.haxx.se/mail/lib-2014-08/0155.html
openssl.c: Fixed compilation warning

warning: declaration of 'minor' shadows a global declaration
openssl.c: Fixed longer than 79 columns
NTLM: ignore CURLOPT_FORBID_REUSE during NTLM HTTP auth

Problem: if CURLOPT_FORBID_REUSE is set, requests using NTLM failed
since NTLM requires multiple requests that re-use the same connection
for the authentication to work

Solution: Ignore the forbid reuse flag in case the NTLM authentication
handshake is in progress, according to the NTLM state flag.

Fixed known bug #77.
sasl: Fixed a memory leak on OOM
curl.1: mention the --post30x options within the --location desc
curl.1: clarify --limit-rate's effect on both directions

Bug: http://curl.haxx.se/bug/view.cgi?id=1414
Reported-by: teo8976
disconnect: don't touch easy-related state on disconnects

This was done to make sure NTLM state that is bound to a connection
doesn't survive and gets used for the subsequent request - but
disconnects can also be done to for example make room in the connection
cache and thus that connection is not strictly related to the easy
handle's current operation.

The http authentication state is still kept in the easy handle since all
http auth _except_ NTLM is connection independent and thus survive over
multiple connections.

Bug: http://curl.haxx.se/mail/lib-2014-08/0148.html
Reported-by: Paras S
Cmake: Require at least CMake 2.8.

CMake 2.6 is already a bit old. Many bugs have been fixed since
its release. We use 2.8 in our company and we have no intention
of polluting our environment with old software, so 2.6 would
not be tested. This shouldn't be a problem since all one need
to build CMake from source is C and C++ compiler.
Cmake: Made boolean defines be defined to "1" instead of "ON"

It's by convention, for compatibility and because the comments say so.
Just mabe someone have written a test like "#if HAVE_XX==1"
Cmake: Added missing protocol-disable switches

They already have their defines in config.h. This makes it possible to
disable the protocols from command line during configure step.
Cmake: Moved macros out of the main CMakeLists.txt
Cmake: LibSSH2 detection and use.
Cmake: Search for liblber, LDAP SSL headers, swith for using OpenLDAP code.
Cmake: Append OpenSSL include directory to search path

At this point I can build libcurl with OpenSSL, OpenLDAP and LibSSH2.
Supported protocols are at least:
HTTP, HTTPS, FTP, SFTP, TFTP, LDAP, LDAPS, POP3, SMTP
(those are the ones we have regression tests for
in our product's testsuite)
Cmake: Don't check for all headers each time

One header at a time is the right way. Apart from that the output on
windows goes from:
...
-- Looking for include files I:/src/libssh2-1.4.3/include/libssh2.h, ws2tcpip.h
-- Looking for include files I:/src/libssh2-1.4.3/include/libssh2.h, ws2tcpip.h
- found
-- Looking for 3 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock2.h
-- Looking for 3 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock2.h - found
-- Looking for 4 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., stdi
o.h
-- Looking for 4 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., stdi
o.h - found
-- Looking for 5 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wind
ows.h
-- Looking for 5 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wind
ows.h - found
-- Looking for 6 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock.h
-- Looking for 6 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock.h - found
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
filio.h
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
filio.h - not found
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
ioctl.h
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
ioctl.h - not found
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
resource.h
...

To much nicer:
...
-- Looking for ws2tcpip.h
-- Looking for ws2tcpip.h - found
-- Looking for winsock2.h
-- Looking for winsock2.h - found
-- Looking for stdio.h
-- Looking for stdio.h - found
-- Looking for windows.h
-- Looking for windows.h - found
-- Looking for winsock.h
-- Looking for winsock.h - found
-- Looking for sys/filio.h
-- Looking for sys/filio.h - not found
-- Looking for sys/ioctl.h
-- Looking for sys/ioctl.h - not found
-- Looking for sys/resource.h
Cmake: Removed useless comments from CMakeLists.txt

They look like some relics after changes.