Make chpl_arch return 'none' for versions of gcc < 4.3
Merge pull request #120 from Kyle-B/chpl-arch-for-old-cc

Make chpl_arch return 'none' for versions of gcc < 4.3

Old versions of GCC would get a few warnings when chpl_arch was run. After this
commit versions of GCC before 4.3 will use 'none' for CHPL_TARGET_ARCH.
Adjusted comm counts in .good for ChapelRangeBase merge.
Merge pull request #126 from vasslitvinov/adjust-good-files-for-improved-comm-counts

Adjusted comm counts in .good for ChapelRangeBase merge.

Get counts on remote locales improved by 2 for each of these two tests.

I confirmed that the improvement corresponds to ChapelRangeBase
merge (*), and did not look for a specific reason.
I am updating the two .good files with the improved counts.

(*) That means going from the merge of #95 to the merge of #90,
equivalently from commit 76d0ac6 to commit 20e2be7.