Run ctfconvert/ctfmerge for all objects

Run ctfconvert/ctfmerge for all objects

Commit 88cb536f (autoconf: detect ctf-tools and add ctf to libafs)
introduced running ctfconvert and ctfmerge for libafs on Solaris, but
didn't add any CTF data for userspace code. This commit causes the
same commands to be run for every binary that we build (if the ctf
tools are available).

To accomplish this, also refactor how we run ctfconvert and ctfmerge.
The approach in commit 88cb536f would require us to modify the
makefile rule for every executable to run RUN_CTFCONVERT and
RUN_CTFMERGE, which is somewhat impractical. So instead in this
commit, we modify all of our *_CCRULE and *_LDRULE variables to wrap
the compiler invocation with the new CC_WRAPPER script. This means our
*RULE variables change from something like this:

    FOO_CCRULE = $(RUN_CC) $(CC) $(XXX_FLAGS) -o $@

to something like this:

    FOO_CCRULE = $(RUN_CC) $(CC_WRAPPER) $(CC) $(XXX_FLAGS) -o $@

CC_WRAPPER expands to the script src/config/cc-wrapper, which just
runs ctfconvert or ctfmerge on the relevant files after the
compiler/linker runs. If the CTF tools are not configured, CC_WRAPPER
expands to nothing, to limit our impact on other platforms.

This commit was developed in collaboration with
mbarbosa@sinenomine.net.

Reviewed-on: https://gerrit.openafs.org/13308
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
(cherry picked from commit c1d39153da00d5525b2f7874b2d214a7f1b1bb86)

Change-Id: Ic357293a946f0759aa032f7c93b4b56e74e9209a
Reviewed-on: https://gerrit.openafs.org/13487
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Mark Vitale <mvitale@sinenomine.net>
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Marcio Brito Barbosa <mbarbosa@sinenomine.net>
Reviewed-by: Cheyenne Wills <cwills@sinenomine.net>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>