[MSVC] Fix size_t/ssize_t when using ZLIB_COMPAT. (#161)

* zconf.h.in wasn't including Windows.h, that is correct header to include definitions from BaseTsd.h, and such missing required type definition for ssize_t when compiling using MS Visual C++
* Various places need implicit casting to z_size_t to get around compatibility issues, this will truncate the result when ZLIB_COMPAT is defined, calling code should check for truncation.
* Add ZLIB_COMPAT flag to nmake Makefile and use it to determine correct
  filenames instead of WITH_GZFILEOP

1 files changed, 1 insertions, 1 deletions

diff --git a/uncompr.c b/uncompr.c
index 68a29cf..77b931c 100644
--- a/uncompr.c
+++ b/uncompr.c
@@ -73,7 +73,7 @@ int ZEXPORT PREFIX(uncompress2)(unsigned char *dest, z_size_t *destLen, const un
 
     *sourceLen -= len + stream.avail_in;
     if (dest != buf)
-        *destLen = stream.total_out;
+        *destLen = (z_size_t)stream.total_out;
     else if (stream.total_out && err == Z_BUF_ERROR)
         left = 1;