python,scons: Break slicc's dependence on m5.util.

The only dependence remaining was a small utility function makeDir which
was only used by slicc. This change moves it to where it's used, and
cleans up the additions to sys.path a little.

Change-Id: I7415b53ea2e9c378b6dbf342b8b3a966f48e117c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/49397
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>

src/mem/slicc/symbols/SymbolTable.py

@@ -25,13 +25,22 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-from m5.util import makeDir
+import os
 
 from slicc.generate import html
 from slicc.symbols.StateMachine import StateMachine
 from slicc.symbols.Type import Type
 from slicc.util import Location
 
+def makeDir(path):
+    """Make a directory if it doesn't exist.  If the path does exist,
+    ensure that it is a directory"""
+    if os.path.exists(path):
+        if not os.path.isdir(path):
+            raise AttributeError("%s exists but is not directory" % path)
+    else:
+        os.mkdir(path)
+
 class SymbolTable(object):
     def __init__(self, slicc):
         self.slicc = slicc

src/python/m5/util/__init__.py

@@ -155,15 +155,6 @@ def printList(items, indent=4):
             line += item
             print(line)
 
-def makeDir(path):
-    """Make a directory if it doesn't exist.  If the path does exist,
-    ensure that it is a directory"""
-    if os.path.exists(path):
-        if not os.path.isdir(path):
-            raise AttributeError("%s exists but is not directory" % path)
-    else:
-        os.mkdir(path)
-
 def isInteractive():
     """Check if the simulator is run interactively or in a batch environment"""
 

util/slicc

@@ -31,7 +31,6 @@ if __name__ == "__main__":
 
     base = dirname(__file__)
     sys.path.insert(1, join(base, "../src/mem"))
-    sys.path.insert(1, join(base, "../src/python"))
     sys.path.insert(1, join(base, "../build_tools"))
     sys.path.insert(1, join(base, "../ext/ply"))