Description of problem:
The new guile has a dependency on libgmp.  This is picked up automatically for
the main guile package but guie-devel neds to explicitly Require: gmp-devel
otherwise other programs can't compile against libguile.

Version-Release number of selected component (if applicable):
guile-devel-1.8.0-3

How reproducible:
Everytime

Steps to Reproduce:
1. checkout gnotime from Fedora Extras CVS.
2. cd gnotime/devel
3. make mockbuild
  
Actual results:
Building will fail when we try to include libguile.h because gmp.h is missing:

In file included from /usr/include/guile/gh.h:24,
                 from ghtml.c:23:
/usr/include/libguile.h:48:17: error: gmp.h: No such file or directory
In file included from /usr/include/libguile.h:91,
                 from /usr/include/guile/gh.h:24,
                 from ghtml.c:23:
/usr/include/libguile/numbers.h:337: error: expected declaration specifiers or
'...' before 'mpz_t'
/usr/include/libguile/numbers.h:338: error: expected ')' before 'rop'

Expected results:
Build would succeed

Additional info:
Full logs of a failed gnotime build are here:

http://buildsys.fedoraproject.org/logs/fedora-development-extras/9521-gnotime-2.2.2-5.fc6/i386/

root.log has yum's dependency resolving that pulls in guile-devel but not gmp-devel.

build.log has the compilation and failure.