First build that failed is <http://buildbot.python.org/all/builders/PPC64%20Fedora%203.x/builds/1510>. Sample of the error messages:

In file included from /usr/include/bluetooth/bluetooth.h:37:0,
                 from /home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Modules/socketmodule.h:58,
                 from /home/shager/cpython-buildarea/3.x.edelsohn-fedora-ppc64/build/Modules/socketmodule.c:321:
/usr/include/bluetooth/bluetooth.h: In function ‘bt_get_le64’:
/usr/include/bluetooth/bluetooth.h:238:18: error: expected specifier-qualifier-list before ‘typeof’
  return bswap_64(bt_get_unaligned((const uint64_t *) ptr));
                  ^
/usr/include/bluetooth/bluetooth.h:238:18: error: called object is not a function or function pointer
  return bswap_64(bt_get_unaligned((const uint64_t *) ptr));
                  ^
/usr/include/bluetooth/bluetooth.h:238:18: error: ‘struct <anonymous>’ has no member named ‘__v’
  return bswap_64(bt_get_unaligned((const uint64_t *) ptr));
                  ^

Benjamin, the commits leading up to this include a lot of your C99 changes, so I added you, but I don’t have any definitive proof it’s your fault :)