Mixin template evaluated to string can convert to string mixinexpression implicitly

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== Quote from kenji hara (k.hara.pg at gmail.com)'s article
> Note: A simple way to construct environment for build dmd/druntime/phobos i
> s:
> 1. Expand newest release package.
> 2. Replace dmd2/src/dmd, dmd2/src/druntime, and dmd2/src/phobos to
> checkouted git repositories.
> 3. Copy https://gist.github.com/1045205 into dmd2/src
>     I am using this makefile for build every day.
> 3. Run make in dmd2/src: make

I have error(archlinux):
cd dmd\src
/bin/sh: line 0: cd: dmdsrc: No such file or directory
make: *** [build-dmd] Error 1