app_python: Makefile - look also for python2.7 if python2 is not found

src/modules/app_python/Makefile

@@ -13,8 +13,11 @@ PYTHON=$(shell which python2)
 
 # workaround for some OS (like MacOS) that don't have a python2 link
 ifeq ($(PYTHON),)
+PYTHON=$(shell which python2.7)
+ifeq ($(PYTHON),)
 PYTHON=python
 endif
+endif
 
 PYTHON_VERSION=${shell ${PYTHON} -c "import distutils.sysconfig;print distutils.sysconfig.get_config_var('VERSION')"}
 PYTHON_LIBDIR=${shell ${PYTHON} -c "import distutils.sysconfig;print distutils.sysconfig.get_config_var('LIBDIR')"}