Prefixing "Engine Manager" with "IronBee" so doxygen list of modules reads consistently.
lua/tests/Makefile.am: Cleanup to match other IronBee makefiles and work on OS X.
lua/tests/test_lua_json: Improve test robustness.
engine_manager: Fixed incorrect printf format strings.
expand.h: Adding return code to documentation.
Removing nonexistant ib_hash_get_nocase from doxygen.
clipp/configuration_parser.cpp - Assign string_rule after construction to satisfy clang 3.4.
ib_engine_module_get: documentation fix.
ib_data_expand_test_str(): Removing return status code. It is always IB_OK.

An assert was added to catch API changes that break this guarnatee.
persistence_framework: Implementing persistence framework module.
persistence_framework: Adding basic unit test.
Adding persistence_framework.h to EXTRA_DIST.
Apache HTTPd: Cleaned up a couple log messages
doxygen: Undefine DLL_LOCAL/DLL_PUBLIC when run through doxygen to avoid some confusion.