tsm: Make explicit rules for stem-changing targets

tsm: Make explicit rules for stem-changing targets

If the stem changes for generating a .o from a .c file,
implicit/suffix rules will not apply. That is, if we specify the
dependencies for 'bar.o' in a Makefile as so:

bar.o: foo.c

This will not match an implicit .c.o rule, since the filename stem
changes. We must add an explicit AFS_CCRULE invocation to make the
rule do anything.

This fixes this problem for the src/tsm41 directory. It may exist
elsewhere, but it's difficult to find unless the build breaks.

Change-Id: I090c074beec120201f334b8bc613170cd4345dde
Reviewed-on: http://gerrit.openafs.org/3261
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>