rpcgen: 'hyper' is 64bit undefined on Darwin use quad_t

"9819fcedf10f1430d4969c86e6df4dfe975b7dcf" After the commit i
observed that we never used "hyper" as defined in .x previously
in the .[c,h] files.

Change-Id: I26152141bca6e789c4a3b3158fffe0a65e4b0878
BUG: 1090807
Signed-off-by: Harshavardhana <harsha@harshavardhana.net>
Reviewed-on: http://review.gluster.org/7566
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>