* Fix INDEX build if MAINTAINER is not defined. [1]
* Remove USE_QT2 since it's obsolete now. [2]
* Clarify comments about ARCH. [3]
* Speedup 'make readmes'. Add a perl script "Tools/make_readmes"
and modify bsd.port.subdir.mk to avoid recursing into individual
port directories to create README.html. [4]
* Fix 'make search' to allow case insensitive search on 5-x/6-x. [5]
* Add the possibility to search the ports by category. [6]
* Remove tk42 and tcl76 from virtual categories since they're
(Only the first 15 lines of the commit message are shown above )