Update Makefile to use virtualenv 1.10.1

Makefile

@@ -45,11 +45,11 @@ dist:
 
 # ===--------------------------------------------------------------------===
 
-${CACHE_ROOT}/virtualenv/virtualenv-1.8.2.tar.gz:
+${CACHE_ROOT}/virtualenv/virtualenv-1.10.1.tar.gz:
 	mkdir -p ${CACHE_ROOT}/virtualenv
-	sh -c "cd ${CACHE_ROOT}/virtualenv && curl -O http://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.8.2.tar.gz"
+	sh -c "cd ${CACHE_ROOT}/virtualenv && curl -O https://pypi.python.org/packages/source/v/virtualenv/virtualenv-1.10.1.tar.gz"
 
-${PKG_ROOT}/.stamp-h: conf/requirements*.pip ${CACHE_ROOT}/virtualenv/virtualenv-1.8.2.tar.gz
+${PKG_ROOT}/.stamp-h: conf/requirements*.pip ${CACHE_ROOT}/virtualenv/virtualenv-1.10.1.tar.gz
 	# Because build and run-time dependencies are not thoroughly tracked,
 	# it is entirely possible that rebuilding the development environment
 	# on top of an existing one could result in a broken build. For the
@@ -71,14 +71,14 @@ ${PKG_ROOT}/.stamp-h: conf/requirements*.pip ${CACHE_ROOT}/virtualenv/virtualenv
 	# this project in ``${PKG_ROOT}``.
 	tar \
 	  -C "${CACHE_ROOT}"/virtualenv --gzip \
-	  -xf "${CACHE_ROOT}"/virtualenv/virtualenv-1.8.2.tar.gz
-	python "${CACHE_ROOT}"/virtualenv/virtualenv-1.8.2/virtualenv.py \
+	  -xf "${CACHE_ROOT}"/virtualenv/virtualenv-1.10.1.tar.gz
+	python "${CACHE_ROOT}"/virtualenv/virtualenv-1.10.1/virtualenv.py \
 	  --clear \
 	  --distribute \
 	  --never-download \
 	  --prompt="(p2pool) " \
 	  "${PKG_ROOT}"
-	-rm -rf "${CACHE_ROOT}"/virtualenv/virtualenv-1.8.2
+	-rm -rf "${CACHE_ROOT}"/virtualenv/virtualenv-1.10.1
 
 	# readline is installed here to get around a bug on Mac OS X which is
 	# causing readline to not build properly if installed from pip.