Add flag to setup.py call so skbuild doesn't default to osx 10.6

Author: yonip

config.sh

@@ -10,6 +10,14 @@ function build_wheel {
     build_bdist_wheel $@
 }
 
+function bdist_wheel_cmd {
+    # copied from multibuild's common_utils.sh
+    # add osx deployment target so it doesnt default to 10.6
+    local abs_wheelhouse=$1
+    python setup.py bdist_wheel -- -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.7
+    cp dist/*.whl $abs_wheelhouse
+}
+
 if [ -n "$IS_OSX" ]; then
   echo "    > OSX environment "
 else