Simplify the mirror settings.

-------- diffstat follows --------
/trunk/scripts/functions | 7 3 4 0 ++---
/trunk/config/global/download.in | 60 14 46 0 +++++++++++-----------------------------------
2 files changed, 17 insertions(+), 50 deletions(-)

 # powerpc specific configuration file

 config ARCH_powerpc

     select ARCH_SUPPORT_ABI

     select ARCH_SUPPORT_CPU

     select ARCH_SUPPORT_TUNE

     help

       The PowerPC architecture, as defined by:

         http://www.ibm.com/developerworks/eserver/articles/archguide.html