Writes .guard-[package] files.  Allows for build-continuations (NYI) and a new scanning interface.
Changes bash "make tests" to use "-j 1" to avoid concurrency problems during testing.
Trying to add a continue mode...

...The prep/init (generation of config, mounting & prep of filesystems)
is skipped propertly, but the build-all script is still not respecting
the guard files.  Need to investigate further.
Fsck bash testing; the tests need an interactive terminal.

And they're not going to get one!!
Updates lm_sensors from 2011 to 2013.
Adding new lm_sensors (which requires lsvpd--sysfs utils).
Added checksum for lsvpd.
Adds TIMEOUTFACTOR to glibc testing.  Glibc testing is (more) stable now.
Updates XLAPP version to 7.0.4.