Change gasnet segment determination to use CHPL_MAKE_COMM_SEGMENT as implemented in r19364.
Change gasnet segment determination to use CHPL_MAKE_COMM_SEGMENT as
implemented in r19364.

This should fix the gasnet tests last night that don't explicitly set
CHPL_GASNET_SEGMENT (distribution robustness, qthreads, nanos).

Sorry I missed this.  It worked for me b/c I already had gasnet built.
Also, I should have remembered that grepmake doesn't look at
third-party Makefiles.



git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@19365 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

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