Instructions for building various rpms on various architectures

This will build various architecture and cpu tuned versions of tor 
bundled in a convenient rpm.  Each rpm will require glibc on the target
system (which any rpm based linux distro should have already installed
by default).  These are the exact same steps used to build the
official rpms of tor

If you wish to further tune tor rpms beyond this list, see the GCC doc
page for further options:
http://gcc.gnu.org/onlinedocs/gcc-4.0.2/gcc/i386-and-x86_002d64-Options.html

i386 with zero tuning (most compatible, should run on a true i386 cpu):
	1) download tor source tarball
	2) at shell prompt, export CFLAGS="-march=i386 -mtune=i386"
	3) in the extracted tor source dir, configure as follows:
	    ./configure --build=i386-pc-linux-gnu --host=i386-pc-linux-gnu --target=i386-pc-linux-gnu
	4) Edit tor.spec.in, find the following line:
	    %configure --with-tor-user=%{toruser} --with-tor-group=%{torgroup}
	add to it:
   	    --build=i386-pc-linux-gnu --host=i386-pc-linux-gnu --target=i386-pc-linux-gnu
	5) make dist-rpm
	6) Install from the .i386.rpm file.

i686 with i686 tuning (best for pentium pro, pentium2, pentium3, and
pentium4-class CPUS including the pentium4):
	1) download tor source tarball
	2) at shell prompt, export CFLAGS="-march=i686 -mtune=i686"
	3) in the extracted tor source dir, configure as follows:
	    ./configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu
	4) Edit tor.spec.in, find the following line:
	    %configure --with-tor-user=%{toruser} --with-tor-group=%{torgroup}
	add to it:
	    --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu
	5) make dist-rpm
	6) Install from the .i686.rpm file.

athlon64 with athlon64 tuning (best for Athlon64 and Opteron):
	1) download tor source tarball
	2) at shell prompt, export CFLAGS="-march=athlon64 -mtune=athlon64"
	3) in the extracted tor source dir, configure as follows:
	    ./configure --build=athlon64-pc-linux-gnu --host=athlon64-pc-linux-gnu --target=athlon64-pc-linux-gnu
	4) Edit tor.spec.in, find the following line:
	    %configure --with-tor-user=%{toruser} --with-tor-group=%{torgroup}
	add to it:
	    --build=athlon64-pc-linux-gnu --host=athlon64-pc-linux-gnu --target=athlon64-pc-linux-gnu
	5) make dist-rpm
	6) Install from the .athlon64.rpm file.