RF: patch for python 3 / windows

.travis.yml

@@ -12,6 +12,8 @@ install:
     - get_python_environment macpython $VERSION venv
     - pip install delocate
     - cd Pillow
+    # Needs patch for python3 / homebrew detection
+    - patch -p1 < ../pillow.patch
     - python setup.py bdist_wheel
     - delocate-wheel dist/*.whl
     - pip install dist/*.whl

pillow.patch

@@ -0,0 +1,13 @@
+diff --git a/setup.py b/setup.py
+index 1a31a89..b21f975 100644
+--- a/setup.py
++++ b/setup.py
+@@ -212,7 +212,7 @@ class pil_build_ext(build_ext):
+             # if Homebrew is installed, use its lib and include directories
+             import subprocess
+             try:
+-                prefix = subprocess.check_output(['brew', '--prefix']).strip()
++                prefix = subprocess.check_output(['brew', '--prefix']).strip().decode('latin1')
+             except:
+                 # Homebrew not installed
+                 prefix = None