Log Message:
-----------
Fix varlena.c routines to allow 1-byte-header text values. This is now
demonstrably necessary for text_substring() since regexp_split functions
may pass it such a value; and we might as well convert the whole file
at once. Per buildfarm results (though I wonder why most machines aren't
showing a failure).
Modified Files:
--------------
pgsql/src/backend/utils/adt:
varlena.c (r1.157 -> r1.158)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/varlena.c?r1=1.157&r2=1.158)