Added new IE for Grooveshark
Fixed pyflakes and pep8 warnings
Fixed errors found by travisci:

py26: re.split can't take flags. use inline flags or re.compile
py27: info_dict must be serializable. remove request object
py335, py34: no urlparse module. use utils.compat_urlparse
Merge remote-tracking branch 'sehrgut/Grooveshark'

Conflicts:
	youtube_dl/__init__.py
	youtube_dl/extractor/__init__.py
[grooveshark,http] Make HTTP POST downloads work
[grooveshark] Fix test md5sum
Merge remote-tracking branch 'origin/master'