change bootsync.sh to bootscript.sh and output console to /boot.log

change bootsync.sh to bootscript.sh
and create new bootsync.sh invoke the bootscript.sh ,logging info to
/boot.log ,so we can see what's wrong...
a few cleanups and use tee to log to screen and file.
start cleaning up some things
disable the kernel boot line automated pxe script - it uses bash
add extra log files for spawned processes, so tee doesn't block
Merge pull request #463 from SvenDowideit/log-boot-script

log boot script output to file.