Added hook to check for SMT workloads. SMT is identified by adding a semicolon between

Added hook to check for SMT workloads. SMT is identified by adding a semicolon between
the workloads.

Now SMT on the O3CPU can be invoked by "/ALPHA_SE/m5.debug ../configs/test/test.py -d --cmd="hello;hello" -i="file1;file2"

I think I am a novice python magician now!!!!....

configs/test/test.py:
    Added hook to check for SMT workloads. SMT is identified by adding a semicolon between
    the workloads.

    Now SMT on the O3CPU can be invoked by "/ALPHA_SE/m5.debug ../configs/test/test.py -d --cmd="hello;hello" --input="file1;file2"
    (btw, We are back to working for this double hello world case)

    I am a novice python magician now!!!!....

--HG--
extra : convert_revision : b55e10dce33f5a9dc4c78f90409ec0912bad4292