writerfilter: pass the whole MediaDescriptor to dmapper

This gives dmapper access to the document URL.

Change-Id: I4844c2fe97815f788de87b53170d4a1d1faebde8
writerfilter: clean up copy&pasted dmapper_logger start / end

Change-Id: Iacae41a32acec153b1db1e1a03b2f2913d114d9b
Unused enumeration value

Change-Id: I82a1f902311fb5b1cb18460c40169cd93234bc88
configure: repor -> repo

Change-Id: I2b0d29f1fab7e81bb80f9023d609cde46d47ebe1