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.