V1.4

More tweaks to handle skips to out of range.

v1.3

More tweaks for _WIN32 build.
Added -s option.
Removed limits on bufSize and checks for unspecified command line options.

v1.2

Fixed to work on Windows.
Bumped max buf size to 8192.

v1.1

Added a number of fixes to handle the case where no -t was provided.
Added a rename source to .BAK if no output file provided.
Not sure it all works. Probably.