* lib/matrix.rb: Add Vector.basis.
  Based on patch by gogo tanaka [#10072]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-10-08

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47834 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/matrix.rb: Add Matrix#laplace_expansion.
  patch by gogo tanaka [#10073]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47835 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
test/ruby/test_rubyoptions.rb (TestRubyOptions#test_encoding): On AIX, locale_charmap is ISO-8859-1 with LANG=C.  This means the source encoding of stdin is ISO-8859-1, so "invalid multibyte char" error does not occur

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e