[IMP-dev] Interface changes to the IMP.em module

[Ben Webb <ben@salilab.org>]

As previously discussed, I just made some interface changes to the 
IMP.em module, to remove unnecessary prefixes or suffixes:
IMP::em::EMFitRestraint is now IMP::em::FitRestraint
IMP::em::ImageEM is now IMP::em::Image
IMP::em::VolumeEM is now IMP::em::Volume

Note that Dina intends to make similar changes to the SAXS module in the 
near future.
Some other minor changes which do not affect the Python interface, but 
do affect the C++ headers:
- Fixed spelling (convertors.h -> converters.h)
- Renamed headers (headers that do not define classes should be given
  names separated by underscores, not CamelCase; EMnoise.h -> noise.h,
  EMproject.h -> project.h, HeaderConverters.h -> header_converters.h)

	Ben
--
ben@salilab.org                      http://salilab.org/~ben/
"It is a capital mistake to theorize before one has data."
	- Sir Arthur Conan Doyle