fuse-bridge: Cure some unhealthy format strings

Mostly sign errors:

Before:

0-glusterfs-fuse: 74: CREATE() /FILE => 0x1e9de9c (ino=-7793743383831318294)
0-glusterfs-fuse: 76: SETATTR() /FILE => -7793743383831318294
...

After:

0-glusterfs-fuse: 109: CREATE() /FILE => 0x267fe9c (ino=12597207469970374167)
0-glusterfs-fuse: 111: SETATTR() /FILE => 12597207469970374167
...

Change-Id: I422d2397fe071b0ac155b8c7e8a40a3365d6d58c
Signed-off-by: Lubomir Rintel <lubo.rintel@gooddata.com>
Reviewed-on: http://review.gluster.org/5402
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>