Synching of Project Files

Synching of changes and additions to "Visual Studio Files" and
"Supplemental Documentation".  This is only done periodically.
Rewrote count_histories and read_data_chunk_v0 functions to
(1) allow multiple files to be read and processed simultaneously
(2) use FILE* object instead of std::iostream object
(3) read header data while counting histories but skip past this and all
unnecessary data when actually reading the files
(4) collect projection angles present in data set
(5) determine data format version from header at run time instead of requiring this to be known before compilation
(6) Verify presence of 'PCTD' by comparing integer value of this to
integer value read from file, avoiding need for character string and
comparison
(7) Separated u/t shifts and mm to cm conversion applied to data into
separate functions only called if required and waiting until all files for
a particular iteration have been read and all of the corresponding data
has been combined
Also made minor modifications and improvements to console output text