Remove unused typedefs

Change-Id: I5af478155963343fa9fe5fa2a39d0209829b2409
Remove unused comphelper::UStringMixHash

Change-Id: Ie41a0ed7c49a2bb3368179bd198c9de508605931
Remove unused typedefs

Change-Id: I59f3fba9d4602cddfef1bd6862cbcfb9eec133ae
Default OMultiTypeInferfaceContainerHelperVar equalImpl parameter

...and assorted OUStringHash clean up

Change-Id: I779904e1275e8df88f567beb388d1d11af9e9671
Missing include

Change-Id: Ie5036134f03a0e9bfdfcb28190444b5d2ddcc323