redhat: update initscripts

redhat: update initscripts

Taken from Fedora packaging with additional fixes.

 * redhat/*.init: make all initscripts LSB-compliant;
     store the daemon configuration file location in $CONF_FILE,
     and perform existence testing before starting the daemon
 * redhat/babeld.init: add initscript for Babel routing engine
 * redhat/quagga.sysconfig: add command-line options for babeld;
     remove the daemon configuration file locations from $*_OPTS;
     clarify directions for configuring watchquagga
 * redhat/Makefile.am: add babeld.init to distribution

Signed-off-by: David Ward <david.ward@ll.mit.edu>
Signed-off-by: David Lamparter <equinox@diac24.net>