ENH: all ctype function have the same issue: char can be signed or unsigned, since isspace only deal with >=0 value (except EOF) one has to first cast it to unsigned char

COMP: sprintf warnings. DWORD should use %ld rather than %d. Also, const char *p, a shadowed variable warning.

  - Remove two unused variables.
  - Replace dynamically allocated array with static.

BUG: Fix kwsysSystem_Shell_GetArgumentForWindows to reset the windows trailing backslash count to zero when a make variable reference is encountered.

ENH: Set CMake Policy CMP0003 to NEW behavior to build without warnings with the upcoming CMake 2.6 release.

COMP: Avoid warning in kwsys IOStream.cxx when the helper functions are not needed.  Define one public symbol to avoid complaints from archivers about empty object files.

STYLE: Remove references to std:: inside KWSys, even in comments.  This will allow a commit check to be added.