update devel/netbeans to 7.3, tidy up Makefile and add patch from cvs.

make port-lib-depends-check complains about missing libs but those are for platf
orms where this package won't run: hp-ux, solaris etc...

the netbeans cvs package also has the same kind of warnings, so let it be. if fo
und objectionable, it is simple to rm -rf those folders. waiting for feedback re
garding that and the port itself from any interested porter.