make: build librados in subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libos as libtool in subdir

Builds libos as a libtool library so we can record dependencies with
automake, rather than manually managing them with the LIBOS_LDA
variable.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libosd as a libtool library in subdir

Make a libtool library so we can encode dependencies.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libmds in the mds subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libosdc in its subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libmon in its subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build librgw in its subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libclient in subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libglobal in its subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
make: build libsystest in its subdir

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>