[dmd-internals] Shouldn't there be a dmd switch to specify search paths for libraries?

[Walter Bright]

mrmocool at gmx.de wrote:
>> Search paths are never platform-independent.
>
> True, but relative paths work. dmd also recognizes something like 
> -I../.. on Windows.
>

Using / for paths on Windows sometimes works, often and unpredictably not.