Replaced inline copyright notice with #include "copyright.h"
Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
changed lookup routines to use unsigned long hash values
added lu_doall() function to loop through table entries
undefined strcmp for systems (AIX) that define it as a macro
added comment about reusing key field following lu_delete
Initial revision
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