Finish test clean-up & reorg.

configs/common/FSConfig.py:
Add default Machine() param
configs/example/fs.py:
configs/example/se.py:
make it work again
src/python/m5/objects/BaseCPU.py:
Make mem PhysicalMemory so that a Parent.any proxy works well
src/sim/process.cc:
Increase default stack size so we don't get an
'increasing stack' message on 'hello world'
tests/SConscript:
Add full list of current configs.
tests/configs/simple-atomic.py:
tests/configs/simple-timing.py:
don't need SEConfig anymore
tests/quick/00.hello/test.py:
tests/quick/20.eio-short/test.py:
fix
tests/run.py:
move configs to separate dir

More restructuring of regression tests.
Moving work back to zizzer...

configs/common/FSConfig.py:
configs/test/fs.py:
Move CPU connections out of makeLinuxAlphaSystem()
src/python/m5/objects/BaseCPU.py:
Create default TLBs in full system.
Move utility cache functions here.
src/python/m5/objects/O3CPU.py:
Add _mem_ports
tests/run.py:
Add binpath()
Change maxtick default to 'forever'
tests/simple-atomic.py:
Use connectmemPorts()
tests/simple-timing.py:
Fix up.