[arch-general] Marking a package as a dependency

[Magnus Therning]

I just recently bothered reading part of pacman's man page and found
that I probably should have performed a `pacman -U --asdeps
mypkg.tar.gz` as I installed dependencies for packages I build
manually.  However I didn't, so can I retro-actively change the
reason-for-installation of an already installed package without
re-installing it?  (No, I couldn't decipher whether the man page
already tells me how to do this :-)

/M

-- 
Magnus Therning                        (OpenPGP: 0xAB4DFBA4)
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