Add documentation in sgml format

Maksim Milyutin · Maksim Milyutin · commit f7317b6f1bbc · 2016-10-03T18:16:28.000+03:00
diff --git a/doc/src/sgml/contrib.sgml b/doc/src/sgml/contrib.sgml
@@ -133,6 +133,7 @@ CREATE EXTENSION <replaceable>module_name</> FROM unpackaged;
  &pgfreespacemap;
  &pgpathman;
  &pgprewarm;
+ &pgquerystate;
  &pgrowlocks;
  &pgstatstatements;
  &pgstattuple;
diff --git a/doc/src/sgml/filelist.sgml b/doc/src/sgml/filelist.sgml
@@ -138,6 +138,7 @@
 <!ENTITY pgfreespacemap  SYSTEM "pgfreespacemap.sgml">
 <!ENTITY pgpathman       SYSTEM "pgpathman.sgml">
 <!ENTITY pgprewarm       SYSTEM "pgprewarm.sgml">
+<!ENTITY pgquerystate    SYSTEM "pgquerystate.sgml">
 <!ENTITY pgrowlocks      SYSTEM "pgrowlocks.sgml">
 <!ENTITY pgstandby       SYSTEM "pgstandby.sgml">
 <!ENTITY pgstatstatements SYSTEM "pgstatstatements.sgml">
diff --git a/doc/src/sgml/pgquerystate.sgml b/doc/src/sgml/pgquerystate.sgml
