Allow passing array references in to poiner arguments.

[plicease]

This is for #227, and also will make code generation easier.

type support:

• [x] sint* in
• [x] sint* out
• [x] uint* in
• [x] uint* out
• [x] float, double in
• [x] float, double out
• [x] complex in
• [x] complex out
• [x] long double in
• [x] long double out
• [x] opaque in
• [x] opaque out
• [x] string in
• [x] string out