Prepare for next development iteration

Change-Id: I9a7e06cc7545ca75d7293e070f8d93b21f62dbf3
Find<MODULE>.cmake: Fix corner cases while finding includes

Change-Id: I2f933ef319671c69db0f3045e1721eb045ca6cba
Find<MODULE>.cmake: Add extra required libraries correctly

Change-Id: I91991896165146b2ceb4a04f1a1cb6b27aad2d24
Find<MODULE>.cmake: Fix problems with kmsfilter requirements

Change-Id: Ie66a8f015f9dea8f01cf13d6076e1045d29a949a
Prepare release 3.0.6

Change-Id: I4590111ce5ce768c86b1230e261ce07148f9da04