Test the ability to configure the $SHCCCOM construction variable.
"""
-python = TestSCons.python
+_python_ = TestSCons._python_
test = TestSCons.TestSCons()
alt_c_suffix = '.c'
test.write('SConstruct', """
-env = Environment(SHCCCOM = r'%(python)s mycc.py $TARGET $SOURCE',
+env = Environment(SHCCCOM = r'%(_python_)s mycc.py $TARGET $SOURCE',
SHOBJSUFFIX='.obj')
env.SharedObject(target = 'test1', source = 'test1.c')
env.SharedObject(target = 'test2', source = 'test2%(alt_c_suffix)s')