Started playing around with type extensions and typebound

procedures.
Merged performance fixes from trunk.

docs/html/node72.html

@@ -108,7 +108,7 @@ Specified as: an integer value. <!-- MATH
  -->
 <IMG
  WIDTH="139" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
- SRC="img118.png"
+ SRC="img122.png"
  ALT="$-1 \le iam \le np-1$"> </DD>
 <DT><STRONG>np</STRONG></DT>
 <DD>Number of processes in the PSBLAS virtual parallel machine.
@@ -132,14 +132,14 @@ Specified as: an integer variable.  </DD>
  -->
 <IMG
  WIDTH="128" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
- SRC="img119.png"
+ SRC="img123.png"
  ALT="$0 \le iam \le np-1$">;
 </LI>
 <LI>If the user has requested on <code>psb_init</code> a number of
   processes less than the total available in the parallel execution
   environment, the remaining processes will have on return <IMG
  WIDTH="73" HEIGHT="29" ALIGN="MIDDLE" BORDER="0"
- SRC="img120.png"
+ SRC="img124.png"
  ALT="$iam=-1$">;
   the only call involving <code>icontxt</code> that any such process may
   execute is  to <code>psb_exit</code>.