Update documentation of suggest_gems_from_name
Remove underscores and hyphens when finding suggestions
Merge remote-tracking branch 'rubygems/master' into remove_underscores_on_suggest_2

Conflicts:
	lib/rubygems/spec_fetcher.rb
Add test for suggest with dashes and underscores
Documenting Gem::Package class.
Split expected message in test for suggestion
Added check for redundant sources on sources -a, prevents the same source from being added twice
Serve documentation for gems in all gem paths.
Test for redundant sources
Add kou to notification list for Travis CI
Remove deprecated Gem.activate_dep

It is described that "will be removed on or after 2011-06".
Remove deprecated Gem.activate_spec

It is described that "will be removed on or after 2011-06".
Remove deprecated Gem.activate

It is described that "will be removed on or after 2011-10".
Remove deprecated Gem.all_load_paths

It is described that "will be removed on or after 2011-10".
Remove deprecated Gem.latest_load_paths

It is described that "will be removed on or after 2011-10".
Remove deprecated Gem.all_partials

It is described that "will be removed on or after 2011-10".
Remove deprecated Gem.promote_load_path

It is described that "will be removed on or after 2011-10".
Remove deprecated Gem.available?

It is described that "will be removed on or after 2011-11". Tests for
Gem.available? are rewriten by replacement method
Gem::Specification.find_by_name.
Remove deprecated Gem.cache_dir

It is described that "will be removed on or after 2011-11".
Remove deprecated Gem.cache_gem

It is described that "will be removed on or after 2011-11".