ignore *-fake.rb

* .gitignore: ignore *-fake.rb generated even when CROSS_COMPILING = no
  since r42862.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44508 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2014-01-06

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e