correct some Xr's which referred to the wrong man page sections

src/lib/libc/stdlib/alloca.3

@@ -29,7 +29,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: alloca.3,v 1.3 1996/08/19 08:33:22 tholo Exp $
+.\"	$OpenBSD: alloca.3,v 1.4 1999/05/10 17:56:28 aaron Exp $
 .\"
 .Dd May 2, 1991
 .Dt ALLOCA 3
@@ -55,8 +55,8 @@ The
 .Fn alloca
 function returns a pointer to the beginning of the allocated space.
 .Sh SEE ALSO
+.Xr pagesize 1 ,
 .Xr brk 2 ,
-.Xr pagesize 2
 .Xr calloc 3 ,
 .Xr malloc 3 ,
 .Xr realloc 3 ,

src/lib/libc/stdlib/malloc.3

@@ -33,7 +33,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: malloc.3,v 1.11 1999/03/23 21:07:57 millert Exp $
+.\"	$OpenBSD: malloc.3,v 1.12 1999/05/10 17:56:28 aaron Exp $
 .\"
 .Dd August 27, 1996
 .Dt MALLOC 3
@@ -253,9 +253,9 @@ detects an error or warning condition,
 a message will be printed to filedescriptor
 2 (not using stdio).
 Errors will always result in the process being 
-.Xr abort 2 'ed,
-If the ``A'' option has been specified, also warnings will
-.Xr abort 2 
+.Xr abort 3 'ed.
+If the ``A'' option has been specified, warnings will also
+.Xr abort 3
 the process.
 .Pp
 Here is a brief description of the error messages and what they mean:

src/lib/libc/stdlib/tsearch.3

@@ -23,7 +23,7 @@
 .\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 .\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\"	$OpenBSD: tsearch.3,v 1.3 1999/02/27 21:56:03 deraadt Exp $
+.\"	$OpenBSD: tsearch.3,v 1.4 1999/05/10 17:56:28 aaron Exp $
 .\"
 .Dd June 15, 1997
 .Dt TSEARCH 3
@@ -95,7 +95,6 @@ specifying the traversal type, and a node level (where level
 zero is the root of the tree).
 .Sh SEE ALSO
 .Xr bsearch 3 ,
-.Xr hsearch 3 ,
 .Xr lsearch 3
 .Sh RETURN VALUES
 The