[COMMITTERS] pgsql: In contrib/uuid-ossp,#include headers needed for ntohl() and nt

[COMMITTERS] pgsql: In contrib/uuid-ossp,#include headers needed for ntohl() and nt

In contrib/uuid-ossp, #include headers needed for ntohl() and ntohs().

Oversight in commit b8cc8f947.  I just noticed this causes compiler
warnings on FreeBSD, and it really ought to cause warnings elsewhere too:
all references I can find say that  is required for these.
We have a lot of code elsewhere that thinks that both 
and  should be included for these functions, so do it that
way here too, even though  ought to be sufficient according
to the references I consulted.

Back-patch to 9.4 where the previous commit landed.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/4a0a34b5b678f0292d3a85a85fb10c79c393be26

Modified Files
--------------
contrib/uuid-ossp/uuid-ossp.c | 4 ++++
1 file changed, 4 insertions(+)