heap_fetch requires buffer pointer, must be released; heap_getnext

no longer returns buffer pointer, can be gotten from scan;
	descriptor; bootstrap can create multi-key indexes;
pg_procname index now is multi-key index; oidint2, oidint4, oidname
are gone (must be removed from regression tests); use System Cache
rather than sequential scan in many places; heap_modifytuple no
longer takes buffer parameter; remove unused buffer parameter in
a few other functions; oid8 is not index-able; remove some use of
single-character variable names; cleanup Buffer variables usage
and scan descriptor looping; cleaned up allocation and freeing of
tuples; 18k lines of diff;

src/tools/pgindent/pgindent

@@ -797,6 +797,7 @@ do
 # workaround indent bug
 	sed 's;^static[ 	][ 	]*;static ;g' |
 	sed 's;^}[ 	][ 	]*/\*;}   /*;' |
+	sed 's;^#endif[ 	][ 	]*/\*;#endif   /*;' |
 	detab -t8 -qc |
 	entab -t4 -qc |
 # move trailing * in function return type