PCRE library can be found at ftp://ftp.cus.cam.ac.uk/pub/software/programs/pcre/
config.m4 will be updated to be more robust later on.
perl_match() takes a regular expression, the source string, and the array
for subpattern matches.
perl_replace() takes a regular expression, the search string, and the replacement
string.
Regular expression is specified using delimiters and options. Example:
perl_match("/<[a-z]*>/i", $text, $tags);
More stuff is coming soon.
