method Object>>_nameForMethodMissing returns now 'Unknown', if name was nil. produces readable error messages, if method missing
when inheriting from nonclass an error is thrown
Merge pull request #307 from MagLev/dikors/name-for-method-missing

Object>>_nameForMethodMissing
Merge pull request #308 from MagLev/niccokunzmann/inheritence_from_nonclass

when inheriting from nonclass an error is thrown
add test for #308
Merge branch 'tim/add-test-for-308' into master-1.9
Merge pull request #343 from MagLev/master-1.9

Merge old PRs into master
Merge remote-tracking branch 'origin/master' into tim/github313
Merge remote-tracking branch 'origin/master' into tim/github313
another try at fixing test result on travis