--HG--
rename : tests/errors/py_unicode_type_errors.pyx => tests/errors/py_ucs4_type_errors.pyx
rename : tests/run/py_unicode_type.pyx => tests/run/py_ucs4_type.pyx

function argument temping algorithm is smart enough now to no longer require all arguments to be simple regardless; varargs need to be temp-ed as well

when deciding if function argument must be moved into temps, ignore if the first argument is a temp as it will be evaluated first anyway