src/pmie/src/pragmatics.c: refactoring initMetric() and reinitMetric()
src/pmie/src/pragmatics.c: refactoring initMetric() and reinitMetric()

There was a _lot_ of common code between these two routines.
They are now wrappers to call init() so all the bugs are in one
place!

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp