Updated mythtv-fixes port

[Geoff Buckingham]

On Sat, Mar 24, 2007 at 06:57:25PM +0100, Alexander Leidinger wrote:
> 
> Note: The port should not assume any specific processor in the  
> PACAKGE_BUILDING case (maybe i486 or better). 

Something like this in the ports make file (while i386 only)
.if defined(PACKAGE_BUILDING)
CONFIGURE_ARGS+= --arch=i486 --disable-mmx
.endif

The above needs to be handle each architecture, what are the minimum CPUs
for packages built for each platform?
i386	is i486 ?
amd64  is k8?  (If so this is good, the binary package will be optimised)
UltraSPARC? Power? Alpha?
The MythTV, configure at least, knows about iWMMXt for arm/Xscale