working code to import Attribute fixture data. Also tests for existence of attribute in Configurable product Fixture loader

re-enabling the Attributes Fixture loader as first coded by @steverice - YAML structure is the same as Steve's proposal, needs more work on the cleanAttributes() and runRequiredIndexers() methods.

Fix issue #108

Fix for autoloader problems with Varien_Autoload and PHPUnit extension

AdminGws Problems in EE 1.13

I currently trying to run a controller test in EE 1.13 and i got errors.
It seems that there are three new checks in AdminGws module.
I'm really unsure if this is a correct solution, but i additionally mocked the methods getGwsStores, getGwsStoreGroups and getGwsRelevantWebsites.

Please have a look at my code.

Posible fix for warnings throwed by Varien_Autoload which are triggered by PHPUnit (class_exist) calls.

Issues/78 configurable fixtures

re #78 adding fixture processing for configurable products. specify the relevant attributes by code and child products by id e.g.
    - entity_id: 410955
      attribute_set_id: 4
      type_id: simple
      sku: "Test Simple Child"
      name: "Test Simple Child"
      short_description: "Test Simple Child"
      description: "Test Simple Child"
      url_key: test-child
      website_ids:
        - us
      category_ids:
        - 2 # Default Category
      price: 30.00
      special_price: 30.00
      tax_class_id: 2 # Taxable Goods
      status: 1             # Enabled
      visibility: 4         # Visible in Catalog & Search
      color: 4         # Configurable Super Attribute
    - entity_id: '336835'
      attribute_set_id: 4
      type_id: configurable
      sku: "test-configurable"
      name: "Test Configurable"
      short_description: "Test Configurable"
      description: "Test Configurable"
      url_key: test-configurable
      super_attributes:
        - color
      configurable_children:
        - 410955
      website_ids:
        - us
      category_ids:
        - 2 # Default Category
      price: 30.00
      special_price: 30.00
      tax_class_id: 2 # Taxable Goods
      status: 1             # Enabled
      visibility: 4         # Visible in Catalog & Search