mis: installer/poldek/vfile vfile.c

[PLD CVS]

Module name:	installer
Changes by:	mis	02/04/17 00:05:18

Modified files:
	poldek/vfile   : vfile.c 

Log message:
- use __GLIBC_PREREQ instead of __GNU_PREREQ; define __GLIBC_PREREQ macro
  if compiled with glibc < 2.1 (Andreas Piesk <a.piesk w gmx.net>)