Include sysroots from Debian 6 up to 9

Also allow cross-compiling software to these targets by adding wrappers that calls GCC/G++ with the appropriate --sysroot option.

build.sh

@@ -326,6 +326,6 @@ while read item; do
 	cp "${executable}" "${toolchain_directory}/bin/${triplet}${glibc_version}-gcc"
 	cp "${executable}" "${toolchain_directory}/bin/${triplet}${glibc_version}-g++"
 
-	wget --no-verbose "https://github.com/AmanoTeam/debian-sysroot/releases/download/latest/${triplet}${glibc_version}.tar.xz" --output-document="${sysroot_tarball}"
+	wget --no-verbose "https://github.com/AmanoTeam/debian-sysroot/releases/latest/download/${triplet}${glibc_version}.tar.xz" --output-document="${sysroot_tarball}"
 	tar --directory="${toolchain_directory}" --extract --file="${sysroot_tarball}"
 done <<< "$(jq --compact-output '.[]' "${workdir}/submodules/debian-sysroot/dist.json")"