Update copyright years.

Update copyright years.

	* catgets/gencat.c: Update copyright year.
	* csu/version.c: Likewise.
	* debug/catchsegv.sh: Likewise.
	* debug/pcprofiledump.c: Likewise.
	* debug/xtrace.sh: Likewise.
	* elf/ldconfig.c: Likewise.
	* elf/ldd.bash.in: Likewise.
	* elf/pldd.c: Likewise.
	* elf/sotruss.ksh: Likewise.
	* elf/sprof.c: Likewise.
	* iconv/iconv_prog.c: Likewise.
	* iconv/iconvconfig.c: Likewise.
	* locale/programs/locale.c: Likewise.
	* locale/programs/localedef.c: Likewise.
	* login/programs/pt_chown.c: Likewise.
	* malloc/memusage.sh: Likewise.
	* malloc/memusagestat.c: Likewise.
	* malloc/mtrace.pl: Likewise.
	* nscd/nscd.c: Likewise.
	* nss/getent.c: Likewise.
	* nss/makedb.c: Likewise.
	* posix/getconf.c: Likewise.