fix for 7.1 #205886 - IllegalArgumentException: EXCEPTION_PARAMETER

Issue: http://netbeans.org/bugzilla/show_bug.cgi?id=205586
Description: When renaming (not instant-rename) or doing a find usages
on an Exception Parameter or other element type which is not supported
by ElementHandle, an exception is thrown.
Risk: low, the fix changes from checking for not allowed types to
checking for allowed types.
Changesets:
http://hg.netbeans.org/jet-main/rev/3cae6215d836
http://hg.netbeans.org/jet-main/rev/c97e56b60303