COMP: Added KWSYS_CXX_HAS_CSTDDEF try-compile to KWSys to provide kwsys/cstddef header (to get size_t for hash_fun.hxx).

ENH: Changing kwsysProcess implementation on Cygwin to use the Win32 implementation instead of the UNIX implementation.  This makes dealing with misbehaving children work better.  The KWSys Win32 process implementaion is more robust than the Cygwin implementation (partly because it doesn't have to exactly reproduce the POSIX api).

ENH: Added KWSys try-compiles KWSYS_STL_HAS_ITERATOR_TRAITS, KWSYS_STL_HAS_ITERATOR_CATEGORY, KWSYS_STL_HAS___ITERATOR_CATEGORY, and KWSYS_STL_HAS_ALLOCATOR_NONTEMPLATE to get the hash table to compile on old HP and Sun compilers.

COMP: Replacing _Select1st with a specialized hash_select1st that avoids requiring the stl pair to have first_type defined.  The old HP STL does not define first_type and second_type in its pair.

ENH: Added KWSYS_CXX_HAS_ARGUMENT_DEPENDENT_LOOKUP try-compile to KWSys.  Needed to optionally bring hash table comparison operators into the global namespace when argument dependent lookup is not supported.

COMP: Remove friend templates and always use template friends (possibly with <>).  Needed to work-around Sun CC bug.

COMP: Removing return value from test6.  It is an infinite loop, so the return causes warnings.  It will never return anyway.

COMP: Adding work-around for CMake dependency scanning limitation.  Any configured header included by KWSYS_HEADER() in a .c or .cxx file in kwsys itself must use this hack to get dependencies.

COMP: Added KWSYS_STL_HAS_ALLOCATOR_MAX_SIZE_ARGUMENT check for non-standard argument to stl allocator<>::max_size method.  Needed for kwsys hashtable to compile on Sun CC.

BUG: When constructing the bucket vector type the allocator given must have been rebound to _Node* already because GCC 3.4's vector type does not rebind it.

ENH: Do kwsys testing as part of cmake testing, command line arguments are not experimental and add simple test for systemtools

ENH: Adding SGI hash_map and hash_set implementation ported from STL to KWSys.  This also adds try-compiles for KWSYS_STL_HAS_ALLOCATOR_REBIND, KWSYS_CXX_HAS_FULL_SPECIALIZATION, KWSYS_CXX_HAS_MEMBER_TEMPLATES, and KWSYS_CXX_HAS_NULL_TEMPLATE_ARGS.