Utility to add debug info into coff file generated by fasm.

Fasm compilation rules:
fasm -s fasfilename asmfilename objfilename

Usage: pecvt [-h] [-v] [-t] fasfilename resultedobjfilename

fasfilename - file with symbolic information generated by fasm with -s option
resultedobjfilename - name of generated obj file with debug info included (it can be equal input obj file name)

Options:
-h show help info
-v show information extracted from fas file (very long and slow listing!)
-t by default pecvt check timestamp of input obj file and timestamp of output obj file (if it present). 
If timestamps equal - no conversion doing (supposed that file not changed). With -t option 
this checking blocked. If name of input obj file equal name of output file name - checking always blocked.
