xrules: Fix for GeoIP check failing to find the country code in tx->var_store.

Unit test included.
xrules: Unit test and fix for FLAGS collection not being set.
Fix for RNS-506.  Eliminate NULLs from buffers returned by TS,
and enforce correct lineend on Request/Response lines, rather than
just return 400.
Trivial optimisation
mod_ironbee for apache httpd: clean up to play nicely
if loaded but not configured.
Fix up mod_ironbee pool at exit!
Fix indirection error (build warning)
engine/rule_engine: Strip whitespace.
engine/module: Include order.
enigne/rule_engine: Indentation cleanup.
module, engine_manager: Spell check.
fast: Add support to build.rb for waggle rules.
fast: Add --lua argument to suggest.rb to give suggestions for waggle rules.
fast/suggest.rb: Improve Lua quote matching.
xrules: Implementing "any" and "none" content header checks.
xrules: Bug fix to assign XRule*ContentType when the parameter is "" and unit test.
trafficserver/ironbee: switch parser to treat \n with or without preceding \r as HTTP lineend
xrules: More completely check for content type and body consistencies.
xrules: Simplifying xrule unit test.
predicate/dot: Add single root version of to_dot().