Use a versioned profile file if available

Bug: http://b/74395273

Update profile-search logic to look for profile files named
<profile_file>.<arbitrary-version> in the profileProject and use that if
available.  This works around an issue where ccache serves stale cache
entries when the profile file has changed.

Test: touch toolchain/pgo-profiles/art/dex2oat.profdata.foo and check it
gets used.

Change-Id: I3de095c263b952cede25af7d0b63dc7280914d76