* grp.cc (etc_group): Removed.

	* grp.cc (etc_group): Removed.
	(parse_grp): Make line parameter nonconst.  Don't copy data into new
	allocated memory.  Check for CR instead of LF to accomodate new
	read method.
	(add_grp_line): Make line parameter nonconst.
	(read_etc_group): Rearrange using new pwdgrp_read class.
	* passwd.cc (parse_pwd): Don't copy data into new allocated memory.
	Check for CR instead of LF to accomodate new read method.
	(read_etc_passwd): Rearrange using new pwdgrp_read class.
	* pwdgrp.h (pwdgrp_check::set_last_modified):  Use different
	parameters.
	(class pwdgrp_read): New class for opening and reading passwd and
	group files.