Tidy Perl compatibility test script.


git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1497 2f5784b3-3f2a-0410-8824-cb99058d5e15
Fix compile-time loop for recursive reference within a group with an indefinite 
repeat.


git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1498 2f5784b3-3f2a-0410-8824-cb99058d5e15