9: Add solutions for section "modules".

Dependencies

• [2] H6XH45OP 0

Change contents

• edit in exercises/modules/modules2.rs at line 3
  [2.123032]→[2.123032:123050](∅→∅)
  −

  − // I AM NOT DONE
• replacement in exercises/modules/modules2.rs at line 5
  [2.123074]→[2.123074:123154](∅→∅)
  − use self::fruits::PEAR as fruit;

  − use self::veggies::CUCUMBER as veggie;
  [2.123074]

  [2.123154]
  + pub use self::fruits::PEAR as fruit;

  + pub use self::veggies::CUCUMBER as veggie;
• edit in exercises/modules/modules1.rs at line 3
  [2.123667]→[2.123667:123685](∅→∅)
  −

  − // I AM NOT DONE
• replacement in exercises/modules/modules1.rs at line 5
  [2.123708]→[2.123708:123732](∅→∅)
  − fn make_sausage() {
  [2.123708]

  [2.123732]
  + pub fn make_sausage() {