Reorganization to move FuncUnit, FUDesc, and OpDesc out of the encumbered directory and into the normal cpu directory.

src/SConscript:
    Split off FuncUnits from old FUPool so I'm not including encumbered code.  This was all written by Steve Raasch so it's safe to include in the main tree.
src/cpu/o3/fu_pool.cc:
    Include the func unit file that's not in the encumbered directory.

--HG--
extra : convert_revision : 9801c606961dd2d62dba190d13a76069992bf241

src/python/m5/objects/FuncUnit.py

@@ -0,0 +1,17 @@
+from m5.config import *
+
+class OpType(Enum):
+    vals = ['(null)', 'IntAlu', 'IntMult', 'IntDiv', 'FloatAdd',
+            'FloatCmp', 'FloatCvt', 'FloatMult', 'FloatDiv', 'FloatSqrt',
+            'MemRead', 'MemWrite', 'IprAccess', 'InstPrefetch']
+
+class OpDesc(SimObject):
+    type = 'OpDesc'
+    issueLat = Param.Int(1, "cycles until another can be issued")
+    opClass = Param.OpType("type of operation")
+    opLat = Param.Int(1, "cycles until result is available")
+
+class FUDesc(SimObject):
+    type = 'FUDesc'
+    count = Param.Int("number of these FU's available")
+    opList = VectorParam.OpDesc("operation classes for this FU type")