trafficserver: Remove obsoleted ironbee.c.
pcre.c: Fix typo in PCRE match error message.
ts_event.c: Share the Traffic Server SSN mutex with subordinate TXN continuations.
docs/reference-manual: Move to module reference chapter with per-module files. RNS-1125
predicate/developer_notes.adoc: Initial developer notes.
Squashed 'libs/libhtp/' changes from a85cb55..81ec059

81ec059 Update for 0.5.13.
4719234 Optimize htp_conn_remove_tx().
bdd97ea Tidy up.
32a23d7 Revert changes that broke backward binary compatibility.
5025b19 Improve performance of htp_conn_remove_tx().
8140c92 Improve performance of htp_list_array_get().
c6f16f9 Tweak the test code to support benchmarking across a large number of transactions.

git-subtree-dir: libs/libhtp
git-subtree-split: 81ec059db6b0eb78c01e9ccdf0f2fff401dd071a
libhtp: Sync with upstream 0.5.13.
Squashed 'libs/libhtp/' changes from 81ec059..bd5cd08

bd5cd08 Fix forgetting to return test status.
6364eb4 Increase compiler warnings for the tests.

git-subtree-dir: libs/libhtp
git-subtree-split: bd5cd08a06c4bfc6351271610011f8282ee89023
libhtp: Sync with upstream 0.5.x branch.
docs/reference-manual/generate-module-index.rb: Improve line numbers reportered with error message.
docs/reference-manual: Add operator capture information. RNS-1124
docs/reference-manual/Makefile.am: Copy images to builddir so that resulting html can use them.
docs/reference-manual/ch-inspection.adoc: Add section on state machine. RNS-1126
modules/stringencoders: Add b16_decode transformation. RNS-1078