Update.

Update.

	* misc/getusershell.c: Make strings in okshells array const.
	* misc/regexp.c: Add const to cast to avoid warnings.
	* sysdeps/unix/sysv/linux/llseek.c: Add prototype for __llseek.
	* sysdeps/unix/sysv/linux/i386/setresuid.c: Add prototype for
	__setresuid.
	* sysdeps/unix/sysv/linux/i386/setresgid.c: Add prototype for
	setresgid.
	* misc/error.c: Add prototypes for __error and __error_at_line.
	* misc/mntent_r.c (__getmntent_r): Add break at end of switch
	statement to avoid warning.