do not parse ruby name when it is already installed, fix #2503
cleaning failures for selecting gemsets
Merge branch 'master' into bugfix/gh_issue_2503
move fast ruby detection after gemset name is split from ruby string
update tests for the not removed gemsets environment file
move __rvm_ruby_string_installed after __rvm_ruby_string_parse
remove also environments file when deleting gemset
__rvm_use_ or fail
extract __rvm_ruby_string_autodetect
Merge pull request #2503 from wayneeseguin/bugfix/gh_issue_2503

RVM mount does not work on local files