rc.conf uses renamed/moved kernel cmdline parser

configs/syslinux-iso/overlay/etc/rc.conf

 #
 # /etc/rc.conf - Main Configuration for Arch Linux
 
-. /etc/archiso/functions
+. /etc/rc.d/functions
 
 LOCALE_DEFAULT="en_US.UTF-8"
 CLOCK_DEFAULT=""
 TIMEZONE_DEFAULT=""
 KEYMAP_DEFAULT="us"
 
-LOCALE="$(cmdline_param locale ${LOCALE_DEFAULT})"
-HARDWARECLOCK="$(cmdline_param clock ${CLOCK_DEFAULT})"
-TIMEZONE="$(cmdline_param timezone ${TIMEZONE_DEFAULT})"
-KEYMAP="$(cmdline_param keymap ${KEYMAP_DEFAULT})"
-CONSOLEFONT="$(cmdline_param consolefont)"
-CONSOLEMAP="$(cmdline_param consolemap)"
+LOCALE="$(kernel_cmdline locale ${LOCALE_DEFAULT})"
+HARDWARECLOCK="$(kernel_cmdline clock ${CLOCK_DEFAULT})"
+TIMEZONE="$(kernel_cmdline timezone ${TIMEZONE_DEFAULT})"
+KEYMAP="$(kernel_cmdline keymap ${KEYMAP_DEFAULT})"
+CONSOLEFONT="$(kernel_cmdline consolefont)"
+CONSOLEMAP="$(kernel_cmdline consolemap)"
 USECOLOR="yes"
 
 MOD_AUTOLOAD="yes"