Remove hardcoded python2 flags for zbar recipe
Remove hardcoded python2 flags for zbar recipe

The python headers are set in the method get_recipe_env of PythonRecipe's base class, so there is no need to set the python headers. Also make sure that we can build with python2legacy. Also move libraries from LDFLAGS TO LIBS.

kivy/python-for-android,PKRoma/python-for-android,kronenpj/python-for-android,rnixx/python-for-android,rnixx/python-for-android,germn/python-for-android,rnixx/python-for-android,germn/python-for-android,germn/python-for-android,kronenpj/python-for-android,PKRoma/python-for-android,kronenpj/python-for-android,kivy/python-for-android,kronenpj/python-for-android,germn/python-for-android,rnixx/python-for-android,kivy/python-for-android,PKRoma/python-for-android,rnixx/python-for-android,germn/python-for-android,kivy/python-for-android,PKRoma/python-for-android,rnixx/python-for-android,germn/python-for-android,kivy/python-for-android,PKRoma/python-for-android,kronenpj/python-for-android