add musl native gcc toolchain

apps/mkmusl

@@ -0,0 +1,19 @@
+#!/bin/bash
+PATH=$(dirname "$(readlink -f "${0}")")/..:$PATH
+DIR=/tmp/appdwarf
+mkdir -p $DIR
+curl http://musl.cc/x86_64-linux-musl-native.tgz | tar xz -C$DIR
+mv $DIR/x86_64-linux-musl-native $DIR/musl
+ln -s gcc $DIR/musl/bin/cc
+
+cat > $DIR/musl/AppRun << 'EOF'
+#!/bin/sh
+HERE=$(dirname $(readlink -f "${0}"))
+export PATH="${HERE}/bin":$PATH
+"$@"
+EOF
+chmod +x $DIR/musl/AppRun
+
+appdwarf $DIR/musl
+mv $DIR/musl.sh musl
+rm -rf $DIR/musl