indented some of the code to curl-style

size earlier when doing HTTP downloads, so that applications and the
progress meter etc know get the info earlier in the flow than before.

the configure script checks for openldap and friends and we link with those
libs just like we link all other third party libraries, and we no longer
dlopen() those libraries. Our private header file lib/ldap.h was renamed to
lib/curl_ldap.h due to this. I set a tag in CVS (curl-7_17_0-preldapfix)
just before this commit, just in case.

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.