Log Message:
-----------
Clarify that surrogate pairs are not encoded in UTF-8 directly
Modified Files:
--------------
pgsql/doc/src/sgml:
syntax.sgml (r1.154 -> r1.155)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/syntax.sgml?r1=1.154&r2=1.155)