Change to modutil_extract_SQL(), add pcre2_data to filter session.
The pattern is now jit-compiled for maximum speed. Move general
pcre2 error printing to a function and macro. Add instance-level
statistics so the filter always prints diagnostic info. Add a mention
of PCRE2 to release notes.
They are not particularly useful, they surely are not used
and impose a small cost for every event extracted from the
poll sets.
This commit only removes the maxadmin commands, subsequent
commits will remove the actual code.
