STLSoft 1.9.93: STLSOFT_CF_NAMESPACE_SUPPORT now only in C++ compilation units

As of version 1.9.93, the symbol STLSOFT_CF_NAMESPACE_SUPPORT is now defined only in C++ compilation units. Its (former) definition in C compilation units was meaningless, and put client code to more work, discrimination for STLSOFT_CF_NAMESPACE_SUPPORT and for __cplusplus. Now the former encapsulates both.

STLSoft 1.9.92: inetstl::filesystem_traits::is_path_name_separator() added

As of version 1.9.92, inetstl::filesystem_traits now has an is_path_name_separator(), to ensure correct handle of paths that contain network ('/') and local ('\\') path name separators.

STLSoft 1.9.91: platformstl::remove_directory_recurse()

As of version 1.9.91, the UNIXSTL/WinSTL directory function remove_directory_recurse() is introduced into the platformstl namespace.