Added a comment about the reuse of `area' in `make_from_string_32' when `s' is already an immutable string.


git-svn-id: https://freeelks.svn.sourceforge.net/svnroot/freeelks/trunk@694 6d4a7a74-6026-0410-acef-abb7cea3cd6d
Prevented inheritance of IMMUTABLE_STRING_X to prevent descendants to access `area' and to modify it.


git-svn-id: https://freeelks.svn.sourceforge.net/svnroot/freeelks/trunk@695 6d4a7a74-6026-0410-acef-abb7cea3cd6d
Added ability to create HASH_TABLEs directly with object_comparison set to True. Updated `empty_duplicates' accordingly.


git-svn-id: https://freeelks.svn.sourceforge.net/svnroot/freeelks/trunk@696 6d4a7a74-6026-0410-acef-abb7cea3cd6d