Update truncation test to work around limitations in some regular expressions max repetition limit
Output debug for virtual expansions
Print PCRE library version
Return -1 if we can't allocate memory for node for request data
Create abstraction layer around regular expression libraries

Call libpcre with native functions, and use the JIT where appropriate/possible

Call regnexec and regncomp where available, and complain about null bytes in patterns and subjects if they're not.
Add always flag to fr_debug_break