Log Message:
-----------
Use <> for libpq #include in example programs, per suggestion from Josh Berkus.
Modified Files:
--------------
pgsql/doc/src/sgml:
libpq.sgml (r1.302 -> r1.303)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/libpq.sgml?r1=1.302&r2=1.303)