Add feature request for construction based on the result of a type funct...

...ion.
I was surprised that the compiler would generate a syntax error here, and did not see it in my compiler.  Instead, I see:

construct_type_function.chpl:15: error: 'new' must be followed by a type expression [checkNormalized.cpp:100]
construct_type_function.chpl:20: error: 'new' must be followed by a type expression [checkNormalized.cpp:100]