Continued ANSIfication and reduced compile warnings.
Instrumented headers against multiple inclusion and for use from C++. Removed NOPROTO sections.
Updates for 3.5 release
changed lookup routines to use unsigned long hash values
added fh entity and general cleanup
fixed prototype of strcmp() for RS/6000
fixed prototype for LUTAB
added comment about reusing key field following lu_delete
enhancements for general (non-string) associations
minor fixes and enhancements
improved table lookup routines with new delete function
Initial revision
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