SSL: in tests, filter ssl client ciphers for version compatibility

Some psk and some not yet supported anonymous suites are only supported
with TLS version >= 1.2. This adds them to the tests and makes sure
that they are not tested on TLS versions that do not support them.
SSL: fix OpenSSL known renegotiation bug detection

The OpenSSL detection match would actually consider all 1.0.1 versions
as affected when really only 1.0.1 - 1.0.1c are.
Fix efile_openfile() to handle stat() failure

If the initial stat() fails then efile_openfile() will still proceed
to open() the file.  If that succeeds and the caller passed a non-NULL
pSize, then it will copy bogus data from the statbuf into *pSize.  This
has been observed to cause file:read_file/1 to return truncated file
data with no error indication.

The use case involved a large file system mounted via NFS, with some
directories containing large number of files, and NFS mount options
that allow the NFS client to return EIO if the NFS server does not
respond quickly enough.  Depending on the caching state of the client
and server machines, a few stat() calls (fewer than 1 per 10 million)
would take long enough to trigger EIO errors, but subsequent open()
calls would succeed, and read_file/1 would return truncated data.  This
sequence of events has been observed via "strace" on beam.smp.

Signed-off-by: Mikael Pettersson <mikpelinux@gmail.com>
inets: Fix HTTP 1.0 body end on closed connection

Receiving HTTP response with no Content-length header and
with body ending on closed connection should give the complete
response body contents up to the last byte received.
crypto: Fix memory leak in hmac stream functions

The context was never deallocated.
crypto: Fix memory leak in some error cases

sign(dss,) and compute_key(dh,)
Add SASL log quick search for pid in observer

Add a new menu to toggle log view.
Disabled by default.
Disabled if rb_server already started on observed node,
in order not to interfere with somebody else.
If enabled, add a tab in process view where log entries
related to pid process are shown.
Need an observed node with at least a version R16B2,
due to the use of newly capability to rb to write into
a file descriptor (on the observing node).
The file descriptor is a private io server on observer.