cmake: remove HAVE_* for snprintf in config.h.in
cmake: remove HAVE_* for snprintf in config.h.in

Having these caused MSVC to not compile, not having them
makes Linux fail prior to adding these definitions
in CMakeLists.txt. As they now cause problems for MSVC, but
the CMakeLists.txt definitions allow Linux to compile, there
should not be any issue.

git-svn-id: ae38cf1093b87151f738d2b2220cac7742ad2e55@1005 64e312b2-a51f-0410-8e61-82d0ca0eb02a

lubosz/check,lubosz/check,lubosz/check,lubosz/check