make FFTALGO default, add MPI initialization, move allocation of sumsquare pointer to precalculate function

adept new reading scheme for MRC files to work with dynamic map memory allocation introduced in parallel git branch

Fix allocation of FFTW scratch space, move deallocation of memory allocated in configuration to cleanup function, get rid of MAX_ORIENT constant

Use a single plan for FFT, makes replaning obsolete, use FFTW_MEASURE instead of FFTW_ESTIMATE to obtain better plan

Merge FFT Algorithm into BioEM version in git repository, cleanup, ensure consistent indentation style