ifpps: Don't duplicate copyright/bug report/license string

Move the copyright/bug report/license string to an own constant and use
it for the output of help() and version() to avoid duplication and
prevent the strings from getting out of sync. This makes the text
section of ifpps.o slightly smaller:

before:
   text	   data	    bss	    dec	    hex	filename
  22146	      0	   1456	  23602	   5c32	ifpps/ifpps.o

after:
   text	   data	    bss	    dec	    hex	filename
  21807	      0	   1456	  23263	   5adf	ifpps/ifpps.o

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

0 files changed, 0 insertions, 0 deletions