Improve ProfilerXhprof's blacklist/whitelist capabilities

Improve ProfilerXhprof's blacklist/whitelist capabilities

* Apply the blacklist / whitelist to profiled sections, not just function names.
* Allow shell-style wildcard patterns in blacklist / whitelist.
* Prefix all profiled section names with 'section.', to distinguish them from
  functions.

Note that shell-style wildcard patterns are not supported by xhprof natively,
but it won't barf on them either, nor will they match against actual function
names (since shell wildcard characters are not valid for PHP function names),
and the filtering will still be enforced in ProfilerXhprof.

This has the side-effect of working around https://github.com/facebook/hhvm/issues/4385

Bug: T99829
Change-Id: I8354ed922fa7b42857eda03be8f62b89ac78d0d6