Fix the open in functions bug.

Make it so regexps don't actually require
opens to use them.
Rewrite CopyFiles to use StrDict rather than the JudySL functions
Fix quoting bug in flx for batch processing.

Remove debug print in copyfiles.
Note a buglet in Filename::join("a/","b") => a//b.
Add tutorials to test target in Makefile.
Enable verification of pthreads_01 now.
Merge branch 'master' into flx_world