* mmslib contains basically the same code as android.support.v7.mms.pdu
does, so align them code-wise and remove the mmslib duplicates
* Since mmslib contains a few usages that are now not accessible
anymore, make the classes or methods public where it complains
Change-Id: I10b8716c0e45079e4795fda4489dc1a9535026f3
47f5533a73