Migrate most of main() and and all option parsing to python

configs/test/fs.py:
configs/test/test.py:
    update for the new way that m5 deals with options
src/python/SConscript:
    Compile AUTHORS, LICENSE, README, and RELEASE_NOTES into the
    python stuff.
src/python/m5/__init__.py:
    redo the way options work.
    Move them all to main.py
src/sim/main.cc:
    Migrate more functionality for main() into python.
    Namely option parsing
src/python/m5/attrdict.py:
    A dictionary object that overrides attribute access to
    do item access.
src/python/m5/main.py:
    The new location for M5's option parsing, and the main()
    routine to set up the simulation.

--HG--
extra : convert_revision : c86b87a9f508bde1994088e23fd470c7753ee4c1

src/python/m5/attrdict.py

@@ -0,0 +1,61 @@
+# Copyright (c) 2006 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Nathan Binkert
+
+__all__ = [ 'attrdict' ]
+
+class attrdict(dict):
+    def __getattr__(self, attr):
+        if attr in self:
+            return self.__getitem__(attr)
+        return super(attrdict, self).__getattribute__(attr)
+
+    def __setattr__(self, attr, value):
+        if attr in dir(self):
+            return super(attrdict, self).__setattr__(attr, value)
+        return self.__setitem__(attr, value)
+
+    def __delattr__(self, attr):
+        if attr in self:
+            return self.__delitem__(attr)
+        return super(attrdict, self).__delattr__(attr, value)
+
+if __name__ == '__main__':
+    x = attrdict()
+    x.y = 1
+    x['z'] = 2
+    print x['y'], x.y
+    print x['z'], x.z
+    print dir(x)
+    print x
+
+    print
+
+    del x['y']
+    del x.z
+    print dir(x)
+    print(x)