Reviewed by: the lists
(2) Change MASTER_SITE_CTAN to reflect current reality.
Submitted by: fenner
(3) Add new port variable NO_LATEST_LINK. When this is set, the
"Latest" package symlink is not created. Use this for ports that
are betas when there is also a port for an older, more stable,
version.
(4) Don't be too stupid about "make deinstall".
Submitted by: fenner