Very minor formatting fixup in the refentry id field to remove

 the trailing "-1". This makes a cleaner html output file name.
Clean up a few refpurpose fields.

doc/src/sgml/ref/current_date.sgml

-<REFENTRY ID="SQL-CURRENT-DATE-1">
+<REFENTRY ID="SQL-CURRENT-DATE">
  <REFMETA>
   <REFENTRYTITLE>
    SQL_CURRENT_DATE
@@ -10,7 +10,7 @@
    SQL_CURRENT_DATE
   </REFNAME>
   <REFPURPOSE>
-- returns the current date, (i.e "today").
+Returns the current date
   </REFPURPOSE>
  <REFSYNOPSISDIV>
   <REFSYNOPSISDIVINFO>
@@ -168,4 +168,4 @@ sgml-exposed-tags:nil
 sgml-local-catalogs:"/usr/lib/sgml/catalog"
 sgml-local-ecat-files:nil
 End:
--->
\ No newline at end of file
+-->

doc/src/sgml/ref/current_time.sgml

-<REFENTRY ID="SQL-CURRENT-TIME-1">
+<REFENTRY ID="SQL-CURRENT-TIME">
  <REFMETA>
   <REFENTRYTITLE>
    SQL_CURRENT_TIME
@@ -10,7 +10,7 @@
    SQL_CURRENT_TIME
   </REFNAME>
   <REFPURPOSE>
-    - returns the current local time, (i.e "now").
+Returns the current local time
   </REFPURPOSE>
  <REFSYNOPSISDIV>
   <REFSYNOPSISDIVINFO>
@@ -183,4 +183,4 @@ sgml-exposed-tags:nil
 sgml-local-catalogs:"/usr/lib/sgml/catalog"
 sgml-local-ecat-files:nil
 End:
--->
\ No newline at end of file
+-->

doc/src/sgml/ref/current_timestamp.sgml

-<REFENTRY ID="SQL-CURRENT-TIMESTAMP-1">
+<REFENTRY ID="SQL-CURRENT-TIMESTAMP">
  <REFMETA>
   <REFENTRYTITLE>
    SQL_CURRENT_TIMESTAMP
@@ -10,8 +10,7 @@
    SQL_CURRENT_TIMESTAMP
   </REFNAME>
   <REFPURPOSE>
-   returns the current timestamp, (i.e the
-   date "today" concatenated with time "now").
+   Returns the current date and time
   </REFPURPOSE>
   
   
@@ -191,4 +190,4 @@ sgml-exposed-tags:nil
 sgml-local-catalogs:"/usr/lib/sgml/catalog"
 sgml-local-ecat-files:nil
 End:
--->
\ No newline at end of file
+-->

doc/src/sgml/ref/current_user.sgml

-<REFENTRY ID="SQL-CURRENT-USER-1">
+<REFENTRY ID="SQL-CURRENT-USER">
  <REFMETA>
   <REFENTRYTITLE>
    SQL_CURRENT_USER
@@ -10,7 +10,7 @@
    SQL_CURRENT_USER
   </REFNAME>
   <REFPURPOSE>
-   - returns the current user name.
+   Returns the current user name
   </REFPURPOSE>
  <REFSYNOPSISDIV>
   <REFSYNOPSISDIVINFO>
@@ -190,4 +190,4 @@ sgml-exposed-tags:nil
 sgml-local-catalogs:"/usr/lib/sgml/catalog"
 sgml-local-ecat-files:nil
 End:
--->
\ No newline at end of file
+-->

doc/src/sgml/ref/delete.sgml

-<REFENTRY ID="SQL-DELETE-1">
+<REFENTRY ID="SQL-DELETE">
  <REFMETA>
   <REFENTRYTITLE>
    DELETE
@@ -204,4 +204,4 @@ sgml-exposed-tags:nil
 sgml-local-catalogs:"/usr/lib/sgml/catalog"
 sgml-local-ecat-files:nil
 End:
--->
\ No newline at end of file
+-->

doc/src/sgml/ref/drop_function.sgml

-<REFENTRY ID="SQL-DROPFUNCTION-1">
+<REFENTRY ID="SQL-DROPFUNCTION">
  <REFMETA>
   <REFENTRYTITLE>
    DROP FUNCTION