cvsdiffbbd can deal now with the git repository
another example for cvsdiffbbd

How to build a historical gif animation.
freebsd mkport.pl: little fixes

* script is callable from other directories
* check for existence of "port" utility and show better diagnostics if
  it is missing
Makefile template for freebsd port: adjust to newest freebsd version

E.g. USE_PERL5 is not used anymore, it's now "USES=perl5".
freebsd mkport: make sure package tarball is deleted

"port test" creates a package tarball, which should be deleted before
creating the port tarball. The previous method was not robust enough,
as it did not took into account the PORTREVISION variable. Now using
PKGFILE make variable.
data update