[openjdk / icedtea patch] allow to build with versioned compiler

[Thomas Fitzsimmons]

Matthias Klose wrote:
> Thomas Fitzsimmons schrieb:
>> Matthias Klose wrote:
>>> its somewhat difficult to set the compiler to something different than
>>> gcc/g++.
>>> Adding another bin dir to PATH doesn't work because the compiler is
>>> called with
>>> an absolute path (why)? Adding a GCC_VERSION macro (which can be set
>>> in the
>>> environment), works for me to build using a specific compiler version.
>> This looks fine; can you test it for b20, add the Makefile.am bits and
>> resubmit?
> 
> this works unmodified with b21. Not sure, what you do mean by adding
> "Makefile.am bits".

Add the patch to Makefile.am's ICEDTEA_PATCHES variable, then regenerate 
Makefile.in.  Josh will take care of this and commit the patch.

Tom