[cmake-developers] Changing the regex used for INFO strings

[Chuck Atkins]

stage/use-consistent-regex-for-info-strings

The change seems minor enough but the impact if it breaks something is
substantial so I wanted to get a second set of eyes on this.  I set out to
fix the non-working ABI detection for craycc and crayCC, which turned out
was because the cray compiler will often generate *lots* of "INFO:" strings
itself, which were getting through the strings regex.  Since all binary
info strings that CMake extracts for system and compiler info should have
the same format, it seemed appropriate to have a consistent regex used in
all the various places that INFO: strings are extracted from compiled
binaries.

- Chuck
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