style, remove usless outcommented assert
allow not aligned  master file sizes

It does not matter since we have allowed larger sizes anyway.
style, cleanup master's countRecords() functions
FDat, use singed types for countRecords() and record_length
FDat::print(), use the size record instead of file size

This does not change anything so far because we compare both sizes in
FDat::checkHeader(). But later we want to allow the case that file is
larger.
add error handling to FDat::countRecords()

This is now similar to the master files.
fix, Fx.dat file might be larger then needed

reported by "star stuff" <studiostarstuff@gmail.com>
update ChangeLog
Merge branch 'fix_fdat_size'

* fix_fdat_size:
  update ChangeLog
  fix, Fx.dat file might be larger then needed
  add error handling to FDat::countRecords()
  FDat::print(), use the size record instead of file size
  FDat, use singed types for countRecords() and record_length
  style, cleanup master's countRecords() functions
  allow not aligned  master file sizes
  style, remove usless outcommented assert