Many minor fixes to get things building after recent compiler changes
libusb1: build using clangStdenv
libusb1: build using clangStdenv ... on darwin
haskell-PastePipe: add version 1.5
Merge pull request #3534 from Fuuzetsu/PastePipe

haskell-PastePipe: add version 1.5
youtube-dl: update to 2014.08.10
Merge pull request #3535 from Fuuzetsu/youtube-dl

youtube-dl: update to 2014.08.10
LambdaHack: mark package as broken
makeFontsConf: fixup to accept older font packages

They contain fonts on the silly path lib/X11/fonts/
makeFontsConf: give up fontDirectories checks for now

This reverts e26188938c3142 and 77487fe6615f
CC #3515.