Pass 2 additional arguments when executing any prediff script: compopts and execopts.  No existing prediff scripts seem to be affected.
Pass 2 additional arguments when executing any prediff script:
compopts and execopts.  No existing prediff scripts seem to be
affected.

This was motivated by the desire to use the compopts to change .good
files when running the distribution robustness test.



git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@16810 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

CoryMcCartan/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,chizarlicious/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,sungeunchoi/chapel,sungeunchoi/chapel,sungeunchoi/chapel,chizarlicious/chapel,hildeth/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,sungeunchoi/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,hildeth/chapel,hildeth/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,chizarlicious/chapel,hildeth/chapel,CoryMcCartan/chapel