only install to /etc if PREFIX is /usr or /usr/local
Deprecate --only-sub
Do not re-encode / to # if / is a platform separator, and correctly handle permission errors (Fixes #831)
release 2013.05.13
Merge pull request #834 from chocolateboy/install_prefix_fix

only install to /etc if PREFIX is /usr or /usr/local
release 2013.05.14
Add base class SearchInfoExtractor for search queries IEs
Merge remote-tracking branch 'jaimeMF/SearchIE'
Simplify generic search IE (Closes #839)
Throw a better error if the protocol is invalid