Changes

[552532] Fixes removals during reparsing in AdvancedPatternParser
Patterns that were removed during an update operation were not handled 
and their usage resulted in getting the pattern parser infrastructure 
getting into an inconsistent internal state.
This change collects the set of removed patterns before parsing and 
using that to calculate a list of removed patterns correctly. However, 
the used algorithms does not always differentiate between added and 
updated patterns correctly - however this should not result in incorrect 
behavior for the users of the API, as the specifications would be 
rebuilt in both cases correctly.
Change-Id: I45407eac9c0382130a89c966ed9f7d6b442afbc2 Signed-off-by:
Zoltan Ujhelyi <zoltan.ujhelyi@incquerylabs.com>