Add _gmtime32 and _localtime32 to lib64/msvcrt.def

These symbols are required by the secapi wrappers
_gmtime32_s and _localtime32_s

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6450 4407c894-4637-0410-b4f5-ada5f102cad1
Remove rand_s and vsprintf_s from msvcrt.def.in

These symbols are implemented in the secapi wrappers so they
shouldn't be part of the msvcrt.def.in files any more

git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@6451 4407c894-4637-0410-b4f5-ada5f102cad1