refactor __rvm_detect_system
Simplify
Refactor configure_path
Merge from master
Don't use __rvm_awk, __rvm_grep as they are not yet defined
Use data from __rvm_detect_system in more places
Update configure_path for SmartOS
Merge branch 'master' into detect_system
Merge pull request #2192 from Ch00k/master

Be silent while updating system and installing custom packages
Merge pull request #2190 from Ch00k/detect_system

__rvm_detect_system refactoring
remove configure_path from installer - it is no more needed after all the solaris refactorings, thanks @Ch00k
Merge branch 'master' of github.com:wayneeseguin/rvm

Conflicts:
	scripts/functions/installer
revert rvm-installer part of 9422baa72e6d456a551ae055ec1bae3e3b4a3820
remove rubinius rdoc link - the gem is not builtin, fix #2188