clang: Don't emit "frame-pointer"="none"

clang: Don't emit "frame-pointer"="none"

This is the default behavior and cuts down on attribute spam.
Probably should also do something to consolidate the option spellings;
printing and parsing it is repeated in at least 3 different places.

In the OpenMP tests, I had to manually delete some metadata check
lines update_cc_test_checks was inserting that included the local
build revision.