[SpecialCaseList] Use glob by default (#74809)

https://reviews.llvm.org/D154014 addes glob support and enables it when
`#!special-case-list-v2` is the first line. This patch makes the glob
support the default (faster than regex after
https://reviews.llvm.org/D156046) and switches to the deprecated regex
support if `#!special-case-list-v1` is the first line.

I have surveyed many ignore lists. All ignore lists I find only use
basic `*` `.` and don't use regex metacharacters such as `(` and `)`.
(As neither `src:` nor `fun:` benefits from using regex.)
They are unaffected by the transition (with a caution that regex
`src:x/a.pb.*` matches `x/axpbx` but glob `src:x/a.pb.*` doesn't).

There is no deprecating warning. If a user finds
`#!special-case-list-v1`, they shall read that the old syntax is
deprecated.

Link:
https://discourse.llvm.org/t/use-glob-instead-of-regex-for-specialcaselists/71666

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