Log Message:
Update from 2.1.4->2.5.7
Use ./configure as one is now supplied
libmxl2 is no longer optional but curl is
Rename doc/eg dirs from ap-security to ap-modsecurity

* Allow for disabling request body limit checks in phase:1
* Now log XML parsing/validation warnings and errors to be in the debug log
  at levels 3 and 4, respectivly.
* Transformation caching has been deprecated, and is now off by default. We
  now advise against using transformation caching in production.
* Improve request body processing error messages.

Any many more . . . see CHANGES for all the details