Add upstream URLs

recipes/cleye/recipe.sh

 GIT=https://github.com/redox-os/cleye.git
+GIT_UPSTREAM=https://github.com/evanandrewrose/cleye.git

recipes/findutils/recipe.sh

-GIT=https://github.com/redox-os/findutils
+GIT=https://github.com/redox-os/findutils.git
+GIT_UPSTREAM=https://github.com/uutils/findutils.git
 CARGOFLAGS="--bin find"

recipes/2048/recipe.sh → recipes/game-2048/recipe.sh

 GIT=https://github.com/redox-os/2048-rs.git
+GIT_UPSTREAM=https://github.com/pierrechevalier83/2048-rs.git

recipes/pastel/recipe.sh

 GIT=https://github.com/redox-os/pastel.git
+GIT_UPSTREAM=https://github.com/robbycerantola/pastel.git
 BINDIR=/ui/bin
 
 function recipe_stage {

recipes/rust64/recipe.sh

 GIT=https://github.com/redox-os/rust64.git
+GIT_UPSTREAM=https://github.com/kondrak/rust64.git

recipes/smith/recipe.sh

 GIT=https://github.com/redox-os/Smith.git
+GIT_UPSTREAM=https://github.com/IGI-111/Smith.git

recipes/uutils/recipe.sh

 GIT=https://github.com/redox-os/uutils.git
+GIT_UPSTREAM=https://github.com/uutils/coreutils.git
 CARGOFLAGS="--no-default-features --features redox"
 
 function recipe_stage {