Fix compilation outside of source directory

Fix compilation outside of source directory

Configure script can be invoked outside of source directory, which allows
to compile sources without spoiling the source directory with compilation
artifacts (like .o files). This patch tries to fix our Makefiles to allow
this to work.

You can test it in current GIT checkout (in the root dir):
# mkdir build; cd build; ../configure; make

As result, you should see all binary files in the 'build' directory.

Signed-off-by: Jan Safranek <jsafrane@redhat.com>
Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>