[Support] Extract simple suffix from GlobPattern (#162118)
Existing glob is optimized with prefix for "src:/dir1/dir2/*",
but I notices we often use patterns like "src:*dir1/dir2/file.h".
So suffix will help.
It will be hard to notice in most cases, but I use ignore list to bisect
some falures.
E.g. put 100k entries in the file, and build/test as needed.
On one of hard compilation units glob matching was 400s, after the
change 20s.
Still, there is higher level inefficiency in ignore list matching, which
I will
address in followup patches and remove 20s above.
