Nick Zitzmann did ssh.c cleanups

builds on QNX 6 again

fix out of memory handling issue

fix out of memory handling issue

fix compiler warning

fix out of memory handling issue

Fixed a few memory leaks in OOM conditions.
Made libssh2 logging more verbose when debugging is enabled.

In case of test failure, try not to show log files of other tests

Enabled the ssh tests 600-609.

runtests -t discovered this out of memory handling issues

unify fopen() failure error message among tests, allowing
the testsuite to count them as errors of the same kind

Further improve displaying of individual logfiles

Fixes some more out of memory handling bugs.

Fixed file handle leak in OOM condition.

Fixed curl_slist_append handling of out of memory conditions on the
easycode list (discovered by runtests' torture test).

Building Windows DLLs and C run-time (CRT) linkage issues

add debug message and expand comment

test can be allowed to run if fopen() is capable of fopen()ing
three additional files once that we have already open()ed the
big bunch of file descriptors.

move WinSock definitions of EBADF, EINTR, EINVAL and EAFNOSUPPORT to setup_once.h

cleanup

Whoops--didn't mean to enable the ssh tests quite yet.

test can be allowed to run if fopen() is capable of fopen()ing
SAFETY_MARGIN additional files once that we have already open()ed
the big bunch of file descriptors.

Added more SSH tests (left disabled for now).

Fixed a memory leak and improper shutdown on SFTP post-quote command failure.

Only one issue left to deal with. Most of the others cut due to lack of
response and/or my personal lack of time to deal further with them at this
point.