fixed warning with gcc 4.x (hopefully); dynamincally imported UseAccurateCaseForPaths() for CLIB port to be stonetime-compatible (NW 3.x).

countermeasures code path.

Improve "universal" alignment type in struct memdebug

the multi interface, but having the comment in here caused more questions than
we fixed problems so I remove it now. It still works fine.

undef standard *printf before (re)defining them

Peteris Krumins pointed out that MingW32 doesnt provide a batch file to set the path to the bin folder.

some brief hints about gssapi and libssh2

based on his comments/suggestions.

fixed link order in case libssh2 is build with zlib.

non-ASCII systems.

it into a few new functions.
Fixed a few leaks in out of memory conditions, including for test case 231.

LIBSSH2_APINO

changed 'rm -f' to 'del /f' so it works without GnuUtils as Peteris Krumins pointed out; changed to use latest external libs.

Peteris Krumins pointed out that the standard MingW32 build depends on zlib; removed that, and added another option for zlib build, and renamed all other targets to reflect zlib dependency.

release the next curl until there is a libssh2 0.16 released.

(http://curl.haxx.se/bug/view.cgi?id=1766320) pointing out that the libcurl
code accessed two curl_easy_setopt() options (CURLOPT_DNS_CACHE_TIMEOUT and
CURLOPT_DNS_USE_GLOBAL_CACHE) as ints even though they're documented to be
passed in as longs, and that makes a difference on 64 bit architectures.

after 7.16.2. This is much due to the different treatment file:// gets
internally, but now I added test 231 to make it less likely to happen again
without us noticing!

POST

was set, this should make it work for all cases!