Small cleanup: making an absolute path really absolute and especially normalized

src/zc/buildout/buildout.py

@@ -281,6 +281,7 @@ class Buildout(DictMixin):
                     absdir = os.path.expanduser(origdir)
                     if not os.path.isabs(absdir):
                         absdir = os.path.join(basedir, absdir)
+                    absdir = os.path.abspath(absdir)
                     data['buildout'][name] = (absdir, src)
 
         self._annotated = copy.deepcopy(data)

src/zc/buildout/setup.txt

@@ -30,7 +30,7 @@ We'll use the buildout script from our sample buildout:
 
     >>> print_(system(buildout+' setup'), end='')
     ... # doctest: +NORMALIZE_WHITESPACE
-    Creating directory '././././eggs'.
+    Creating directory '/sample-buildout/test/eggs'.
     Error: The setup command requires the path to a setup script or
     directory containing a setup script, and its arguments.