Fix and reenable Python 2.6 tests on Travis

Closes #202.

.travis.yml

 language: python
 env:
+    - PYTHON_VER=2.6
     - PYTHON_VER=2.7
     - PYTHON_VER=3.2
     - PYTHON_VER=3.3

Makefile

@@ -31,7 +31,7 @@ $(PYTHON_PATH):
 	curl --progress-bar --location $(PYTHON_DOWNLOAD) | tar -zx
 ifeq ($(PYTHON_VER),2.6)
 	cd $(PYTHON_PATH) && \
-	curl --progress-bar https://raw.github.com/collective/buildout.python/ad45adb78bfa37542d62a394392d5146fce5af34/src/issue12012-sslv2-py26.patch > ssl.patch
+	curl --progress-bar -L https://raw.github.com/collective/buildout.python/ad45adb78bfa37542d62a394392d5146fce5af34/src/issue12012-sslv2-py26.patch > ssl.patch
 	cd $(PYTHON_PATH)/$(PYTHON_ARCHIVE) && \
 	patch -p0 < ../ssl.patch
 endif