Uniform "generated by" information in output files.

Extend the printBinaryInformation() function to make it possible to
write the lines in a particular comment format.  Use the function to
print out "Generated by" information in several output formats.  Removed
command_line() from statutil.h as it is no longer used.  Replaced most
uses of Program() with ShortProgram() where the actual path was not
relevant.

Also use printBinaryInformation() to print out information into the
mdrun log file.  Again print the copyright header to the beginning of
the log file.

Related to #1209.

Change-Id: Ibf32de318421a10d39f217517005fea408d19fbf