When trying to find the types of a method, lookup the untyped slot.



git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@36056 72102866-910b-0410-8b05-ffd578937521
fix error checking for perform on finished thread

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@36057 72102866-910b-0410-8b05-ffd578937521
Merge remote-tracking branch 'upstream/master'