7.4 -> 7.4.1 upgrade with customization on freebsd

I installed 7.4 from the FreeBSD ports collection (I'm running 4.9-RELEASE).
Did nothing special, just make && make install and all was well.

I now have updated my ports collection via cvsup and see that the 7.4.1 port
is available.  So now I have several, very specific needs:

1) having now done some development in 7.4, I've decided I need to be able
to exceed the default limit of 16 arguments for plpgsql functions

2) I would like to upgrade to 7.4.1 without having to re-edit any config
files or change any paths.

3) I would like to prevent the database shown by "pkg_version -v" from
having one entry for 7.4 and another for 7.4.1

Suggestions?  Caveat: I'm a java + sql centered coder and makefiles make me
wince.


Bill McMilleon