* added WCHAR_MIN and WCHAR_MAX - already as 32-bit values, since that's
what wchar_t is going to become, soon (and those values could not have
been used before, since they were missing)
* this is still work-in-progress though, I need to run more tests to find
out which of these functions are actually working, too
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31182 a95241bf-73f2-0310-859d-f6bbb57e9c96