- Adding makeboot64.bat which run syslinux64.ext.
Using bash instead sh in Makefile.
- Bug fixed: mknic-nbi should be run in drbl-live. Because it is run in chroot when DRBL live is created. However, the variable use_run_in_initrd and use_dev_pts_in_initrd in initramfs' /etc/linuxrc.conf (i.e.  "/usr/lib/mkpxeinitrd-net/initrd-skel/etc/linuxrc.conf") need to be updated in the run time. Otherwise it migh t cause some modules fail to be loaded.
Updated for new release.