Log Message:
Update devel/lua-rocks to version 2.4.2.

Version 2.4.2 - 30/Nov/2016
	* Fixed conflict resolution on deploy/delete
	* Improved dependency check messages
	* Performance improvements when removing packages
	* Support user-defined `platforms` array in config file
	* Improvements in Lua interpreter version detection in Unix
	  configure script
	* Relaxed Lua version detection to improve support for
	  alternative implementations (e.g. Ravi)
	* Plus assorted bugfixes and improvements