a little faster becuase A is inverted before
bugg fixes
free field inside diffracted loop
Merge branch 'faster' of https://github.com/marshallcoz/libem-2d into faster

* 'faster' of https://github.com/marshallcoz/libem-2d:
  check those phi

Conflicts:
	LIBEM.f90
	LIBEM.scif
	WorkDir/HVDEPTH.txt
	WorkDir/interestingPoints.txt