SOme ground work to support Windows for benchmark farm

Mainly straightforward changes, the only tricky part: detect number of CPU
sockets. Didn't figure out yet how to do this on Windows.

benchmark/farm.py

@@ -169,8 +169,8 @@ def downloadLatestBlender(directory):
     """
     Download latets Blender from buildbot to given directory.
     """
-    # TODO(sergey): This we need to change to currently running configuration.
-    latest_blender_url = buildbot.buildbotGetLatetsVersion("Linux", "64bit")
+    platform = sys.platform
+    latest_blender_url = buildbot.buildbotGetLatetsVersion(platform, "64bit")
     if not latest_blender_url:
         logger.ERROR("Unable to figure out latest Blender version")
         return
@@ -203,6 +203,8 @@ def findBlenderInDirectory(directory):
     platform = sys.platform
     if platform == 'linux':
         return os.path.join(blender_dir, "blender")
+    elif platform == "win32":
+        return os.path.join(blender_dir, "blender.exe")
     else:
         raise Exception("Need to support your OS!")
 

benchmark/foundation/buildbot.py

@@ -49,6 +49,11 @@ def _getBuildbotPlatformRegex(platform, bitness):
             return re.compile(".*linux-glibc[0-9]+-x86_64.*")
         elif bitness.startswith("32"):
             return re.compile(".*linux-glibc[0-9]+-i686.*")
+    elif platform_lower in ("win32"):
+        if bitness.startswith("64"):
+            return re.compile(".*win64.*")
+        elif bitness.startswith("32"):
+            return re.compile(".*win32.*")
     else:
         # TOGO(sergey): Needs implementation
         pass

benchmark/foundation/system_info.py

@@ -69,6 +69,9 @@ def getNumPhysicalCPUs_Linux():
 def getNumPhysicalCPUs():
     if sys.platform == 'linux':
         return getNumPhysicalCPUs_Linux()
+    elif sys.platform == 'win32':
+        # TODO(sergey): Currently all WIndows machines here are single socket.
+        return 1
     else:
         raise Exception("Needs implementation")
 

benchmark/foundation/util.py

@@ -4,6 +4,7 @@ from foundation import progress
 import os
 import requests
 import tarfile
+import zipfile
 
 
 def humanReadableTimeDifference(seconds):
@@ -111,6 +112,10 @@ def unpackArchive(filename, directory):
     if filename.endswith(".tar.bz2"):
         tar = tarfile.open(name=filename, mode="r:bz2")
         tar.extractall(directory)
+    elif filename.endswith(".zip"):
+        zip_ref = zipfile.ZipFile(filename, 'r')
+        zip_ref.extractall(directory)
+        zip_ref.close()
     else:
         # TODO(sergey): Need to support more archive types.
         pass