and comparison ops.)

Started adding support for floating-point type, floating-point literals, and logging of floats. Other operations on float probably don't work yet.

Add .def file support to the new build system (which does nothing at the moment since I don't know how to use .defs on MinGW)

handling cdecl call they should skip it when calling the final function.

There is some cleanup to be done on the generated IL, but this gets us
running Hello World for real.

Signed-off-by: NPatrick Walton <pcwalton@mimiga.net>

Modify native_item_fn to handle trailing linkage names that differ from the item name (used in win32 build of std.dll)