Add windres wrapper for LLVM tools

Dockerfile.dev

@@ -28,15 +28,6 @@ COPY wrappers/*.sh ./wrappers/
 COPY install-wrappers.sh .
 RUN ./install-wrappers.sh $TOOLCHAIN_PREFIX
 
-# Cheating: Pull windres from the normal binutils package.
-# llvm-rc isn't fully usable as a replacement for windres yet.
-RUN apt-get update -qq && \
-    apt-get install -qqy binutils-mingw-w64-x86-64 && \
-    cp /usr/bin/x86_64-w64-mingw32-windres $TOOLCHAIN_PREFIX/bin/x86_64-w64-mingw32-windresreal && \
-    apt-get remove -qqy binutils-mingw-w64-x86-64 && \
-    apt-get clean -y && \
-    rm -rf /var/lib/apt/lists/*
-
 # Build MinGW-w64
 COPY build-mingw-w64.sh .
 RUN ./build-mingw-w64.sh $TOOLCHAIN_PREFIX