Added wheel and pip upgrade (wheel save a lot of time)

git-svn-id: https://redmine.imt-atlantique.fr/svn/xaal/code/Python/branches/0.7@3045 b32b6428-25c9-4566-ad07-03861ab6144f

install.py

@@ -23,6 +23,10 @@ def title(msg):
     print("="*78)
 
 
+def required():
+    os.system('pip install --upgrade pip')
+    os.system('pip install wheel')
+
 def setup_develop(path):
     title(path)
     os.system('cd %s && pip install -e .' % path)
@@ -47,6 +51,7 @@ def search_setup():
     return result
 
 def run():
+    required()
     for p in BASE:
         setup_develop(p)
     for p in search_setup():