Make all make calls parallel

recipes/autoconf/recipe.sh

recipes/automake/recipe.sh

recipes/bash/recipe.sh

recipes/cmatrix/recipe.sh

recipes/curl/recipe.sh

recipes/dash/recipe.sh

recipes/diffutils/recipe.sh

recipes/dosbox/recipe.sh

recipes/duktape/recipe.sh

recipes/ffmpeg/recipe.sh

recipes/freetype/recipe.sh

recipes/gawk/recipe.sh

recipes/gigalomania/recipe.sh

recipes/git/recipe.sh

recipes/gnu-binutils/recipe.sh

recipes/gnu-grep/recipe.sh

recipes/gnu-make/recipe.sh

recipes/jansson/recipe.sh

recipes/libiconv/recipe.sh

recipes/libjpeg/recipe.sh