[Issue 23479] ImportC recognizes .i and .c files, but not .h files

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23479

--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
There's no plan for distinguishing between <foo.h> and "foo.h". The only
difference between them, anyway, is <foo.h> does not look in the default
directory first.

    import dir.file;

--