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
Switch to new subcapture handling code
Typo
Fix xlat_tokenize code so it handles arbitrary numbers of capture groups
xlat_inst only needed for foreach
Need MAX_REGEX + 1 for the complete match group
Fix handling of regexes with > 32 capture groups
Doxygen
Add support for named capture groups
Unneeded debug
Fmt is used
Should be HAVE_REGEX
Typos
Clarify warning message
Remove from the heap if it's unused.  Closes #855