fix permissions only of extracted files not everything in target, also removes target files, fix #1680
Merge branch 'master' of github.com:wayneeseguin/rvm
NEXT: 1.19.1 with 1680 and 1743
improve extraction errors detection, fix rights for travis, update #1680
NEXT: 1.19.1 with 1680
fix extraction temp on FreeBSD, fix travis rights fixing, update #1680
NEXT: 1.19.1 with 1680