[patch] Builtind ATLAS from VSIPL++ tree

[Jules Bergmann]

This patch integrates the configuration, build, and install of ATLAS and 
the LAPACK into VSIPL++.

The default ATLAS configuration, which is an interactive C program, is 
replaced by an autoconf script.  The autoconf script is currently a 
subset of the original functionality, enough to build on Linux/x86 
machines such as Sethra.  The default ATLAS build is used as is, with 
some changes to build outside of the source trees.

When configuring VSIPL++, the builtin ATLAS gets used if lapack is 
enabled (--enable-lapack) and no installed ATLAS or LAPACK libraries are 
found, or if it is explicitly selected (--with-lapack=builtin).

ATLAS doesn't implement the full LAPACK library, so to fill in the 
missing bits, I added the LAPACK reference implementation to our source 
tree (as a CVS module -- you will probably need to re-checkout VSIPL++ 
to get this).

				-- Jules
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