Cinelerra minor fixes

Created desktop file, switched from termcap to ncurses, and added
-Wl,--no-as-needed to the LDFLAGS since -Wl,--as-needed for some reason
causes it not to build.
Added distrho-tal PKGBUILD

The one in the AUR doesn't work, found this one in the comments. It is
taken from:

http://pastebin.com/gU5dejTM