[patch] Misc fixes

[Jules Bergmann]

This patch:

* Adds 'Proper_type_of' trait to add const back to expression block 
types.  The const is stripped off by dispatch when calling the C-VSIP 
reduction BE with the optimized library.  This is intended as a work 
around until we remove the requirement that expression block types be const.

* Fix vmmul to work with vectors distributed via a replicated map.

* Install opt/diag and opt/fft directories and headers

* Move examples installation into pkgdatadir/examples
   (in preparation for installation of benchmarks and tutorial
   examples).

Also, I'm planning to move extdata_local.hpp from opt/ to core/.

				-- Jules

-- 
Jules Bergmann
CodeSourcery
jules at codesourcery.com
(650) 331-3385 x705