Move /etc/conf.d/rc to /etc/rc.conf.

Lowercase all configurable variables, non configurations remain uppercase.
Replace rc_env_bool with rc_yesno.
Split localmount info procfs (Linux) and dumpon, savecore (BSD)

etc.Linux/Makefile

@@ -1,5 +1,6 @@
-DIR  = /etc
-CONF = inittab 
+DIR         = /etc
+CONF        = inittab
+CONF_APPEND = rc
 
 TOPDIR = ..
 include $(TOPDIR)/default.mk

etc.Linux/rc.conf

@@ -0,0 +1,25 @@
+
+##############################################################################
+# LINUX SPECIFIC OPTIONS
+
+# This is the number of tty's used in most of the rc-scripts (like
+# consolefont, numlock, etc ...)
+rc_tty_number=12
+
+# Use this variable to control the /dev management behavior.
+#  auto   - let the scripts figure out what's best at boot
+#  devfs  - use devfs (requires sys-fs/devfsd)
+#  mdev   - use mdev (requires sys-apps/busybox)
+#  udev   - use udev (requires sys-fs/udev)
+#  static - let the user manage /dev (YOU need to create ALL device nodes)
+rc_devices="auto"
+
+# UDEV OPTION:
+# Set to "yes" if you want to save /dev to a tarball on shutdown
+# and restore it on startup.  This is useful if you have a lot of
+# custom device nodes that udev does not handle/know about.
+RC_DEVICE_TARBALL="no"
+
+# Sets the level at which logging of messages is done to the
+# console.  See dmesg(8) for more info.
+dmesg_level="1"