TST: Path consistency

Also removes interference with appveyor python paths

Author: Kojoley

appveyor.yml

@@ -25,19 +25,19 @@ environment:
        PYTHON_VERSION: "3.4.4"
        PYTHON_ARCH: "64"
 
-     - PYTHON: "C:\\Python35"
+     - PYTHON: "C:\\Python35_32"
        PYTHON_VERSION: "3.5.4"
        PYTHON_ARCH: "32"
 
-     - PYTHON: "C:\\Python35-x64"
+     - PYTHON: "C:\\Python35_64"
        PYTHON_VERSION: "3.5.4"
        PYTHON_ARCH: "64"
 
-     - PYTHON: "C:\\Python36"
+     - PYTHON: "C:\\Python36_32"
        PYTHON_VERSION: "3.6"
        PYTHON_ARCH: "32"
 
-     - PYTHON: "C:\\Python36-x64"
+     - PYTHON: "C:\\Python36_64"
        PYTHON_VERSION: "3.6"
        PYTHON_ARCH: "64"