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
removed unnecessary call to hdfreebeams() that increased fragmentation
made caching code slightly more efficient
improved duplicate ray checking
change clumpbeams() callback function to take clump's queue
moved routines to clumpbeams.c and made rhcopy clump beams
changed getheader() to listen to return value of passed function
changed -c option to -u and -f option to -d
tried to fix poor performance of sorted load by going to partial sort
fixed bug from sorting change (3.4
added -f (fudge distance check) and -c (check repeats) options
change code to read beams in file order
went back to use of long file pointers
made checking of OBSTRUCTIONS variable more accurate
Initial revision
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