STYLE: Replace DBL_MAX with itk equivialent.
STYLE: Remove redundant warning suppression.

These suppressions are done from ITK proper and
are not needed in each individual file.
ENH: Replace #define of FILESEP with typed variable.
PERF: Potential performance gain

cppcheck states that in some cases ++i is faster than i++ (for c++ objects
this is often true).  Perfering pre-increment probably makes no difference
in most of these cases, but it does make the code more consistent and
easier to change objects to c++ containers without incurring speed penalties.
BUG: Fix filename parsing for compressed images.

When using compressed images, there are two extensions that need to be removed
in order to get to the base name.

Conflicts:
	IGR3D_MABMIS_Testing.cxx