minor update
Merge branch 'master' of https://github.com/keplerproject/luarocks
Catch undeclared globals in rockspecs
bugfix doc on windows
 - path with spaces could not be opened
 - missing parameter for 'start'
Merge pull request #222 from Tieske/fic_doc

Fix doc on windows
Merge branch 'master' of github.com:keplerproject/luarocks
This constant needs to be global.
Add git+http fetch module to be used in case of "git clone http://..." URLs.