vm_method.c: add new ruby::method-cache-clear dtrace probe
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44103 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_method.c: add new ruby::method-cache-clear dtrace probe
ruby::method-cache-clear probe on global or klass-level method cache
clear [Bug #9190]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44103 b2dd03c8-39d4-4d8f-98ff-823fe69b080e