Commits on Apr 21, 2016

1. Ensure virtualenv activates. …

   There are two changes:
    * remove quoting which causes virtuaenv not activate
    * check virtualenv actually activated
   
   If the quoting added in the fix in #8394 (4ff8d3a) kicks in, it
   causes virtualenv to fail to activate.
   
   For the common case it is no op:
   ```python
   >>> from pipes import quote
   >>> print quote('common/case')
   common/case
   ```
   
   When the path actually needs quoting, this is what happens:
   
   ```python
   >>> print quote('test spaces')
   'test spaces'
   >>> print quote('windows\\path')
   'windows\\path'
   ```
   
   Note the embedded quotes.
   
   Virtualenv in activate_this.py uses __file__ to build the path that
   should be added to PATH:
   
   ```python
   >>> print os.getcwd()
   C:\software\git
   >>> print os.path.abspath(quote('windows\\path'))
   C:\software\git\'windows\path'
   >>>
   ```
   
   The constructed path is not valid. Adding it at the beginning of PATH
   has no effect. This issue affects any case when the call to `quote`
   kicks in.

   

   zwn committed Apr 21, 2016

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