* 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
obsolete. [7]
* Introduce new variable - DISTVERSION, vendor version of the
distribution, that can be set instead of PORTVERSION and is
automatically converted in a conforming PORTVERSION. [8]
* Use --suffix instead of -b option for patch(1) to make it
compatible with BSD patch(1) [9]
* Fix {WANT,WITH}_MYSQL_VER behavior, to deal with conflicting
versions. [10]
PR: ports/68895 [1], ports/69486 [2], ports/68539 [3],
ports/70018 [4], ports/68896 [5], ports/73299 [6],
ports/73570 [7], ports/67171 [8], ports/72182 [9]
Submitted by: linimon [1][3], arved [2][7], cperciva [4],
Matthew Seaman <m.seaman@infracaninophile.co.uk> [5],
Radek Kozlowski <radek@raadradd.com> [6],
eik [8], Andreas Hauser <andy-freebsd@splashground.de> [9],
clement [10]
