hdf5_msb

[svn-r23555] Bug fix: HDFFV-8358

The previous change set exec_prefix, libdir and includedir to actual values.
That removed the option for user to hand edit just the first prefix=...
to make "everything" to work.
Changed h5redeploy to do this by default:
## Installation directories:						  ##
## prefix	architecture-independent files.				  ##
## exec_prefix	architecture-dependent files, default is <prefix>.	  ##
## libdir	libraries, default is <exec_prefix>/lib.		  ##
## includedir	header files, default is <prefix/include>.		  ##
############################################################################
This allows users to just change the first line of prefix=<...> and the
effect will change libdir and includedir too.

This was also try to accommodate the -prefix option of h5XX. Unfortunately,
after changing h5redeploy, I found out the h5XX code to support -prefix
actually does not provide the stated efffect. This will be fixed in the
release.

Tested: h5committested plus hand test.