samba - Mar 2013 - Updates to RHEL 6 compatible backport of Samba 4.0.3, with domain controller activated

I've been doing some work backporting the Fedora rawshid version of
Samba 4.0.3 to work with RHEL 6. The latest updates (with some
suggested changes from others) are at:

           https://github.com/nkadel/samba4repo

The full suite for building Samba 4.0.3 on RHEL 6 is there, with all
the updated libraries and hooks to put it in a yum repository. In
particular, with some help, I've gotten it to build with domain
controller options. I'd welcome anyone with more of a mixed
environment to test it: I've started a new job that doesn't need
domain controllers, and I don't have a stack of spare Windows licensed
hosts to test with.

* Bundle updated versions of libtalloc, libldb, libtevent, etc. for RHEL 6.
* Restore SysV init scripts (Fedora rawhide relies exclusively on systemd.)
* Activate "with_dc" to compile with the domain controller.
* Include a stack of libraries for the "samba-dc-libs" toolsuite.
* Clean up the dependencies for with_dc and with_mitkrb5.
* Make clear that the "with_talloc", "with_tevent", etc.
flags
actually mean "with_internal_talloc" rather than using the separately
system compiled talloc, tevent, etc. (RPM spec file syntax fis usually
based on autoconf syntax, mwaning  where "--without-talloc" would mean
"do not use tlaloc at all", and it just gets confusing.
* Resolve some older RPM version issues with handling documents that
are not installed in unexpected locations under Fedora.

I also discovered something nasty: when testing out and recompiling
this material in various iterations, the "/tmp/wafgrade tends to
get..... clutered. This is problematic if you've not allocated a lot
of space on / I'd like to actually suggest that WAFCACHE be set to be
in the build directory, not over in /tmp, and that it be cleared as
part of starting any new compilation to avoid conflicts with other
projects.

Any thoughts are welcome. The first time I d id a Samba port was way,
way back with SunOS 4.1.2....