so that the content surely get initialized. [ruby-dev:42480]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29635 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
don't use ffi_closure_alloc, ffi_prep_closure_loc and
ffi_closure_free on MACOSX and __linux__.
[ruby-dev:41483] [ruby-dev:41214]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28315 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/fiddle/*: testing fiddle extension
* ext/dl/lib/dl.rb: Requiring fiddle if it is available
* ext/dl/lib/dl/callback.rb: using Fiddle if it is available
* ext/dl/lib/dl/func.rb: ditto
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e