kGP終了時の出力を変更

[RyokoIzuta]

理由は下記の2つ

• 終了理由を分かりやすくしたい
• 終了時に出力する情報を増やしたい

旧

- 2020-05-18 18:15:16 [main] [INFO]  KGenProgMain - enough solutions have been found.
- 2020-05-18 18:15:16 [main] [INFO]  KGenProgMain - GA stopped at the era of 10th generation.
2020-05-18 18:15:16 [main] [INFO]  Patch - 
 --- example.CloseToZero
 +++ example.CloseToZero
@@ -16,7 +16,6 @@
    */
   public int close_to_zero(int n) {
     if (n == 0) {
 -      n++; // bug here
     } else if (n > 0) {
       n--;
     } else {
- 2020-05-18 18:15:16 [main] [INFO]  KGenProgMain - execution time: 631 seconds

新

+ 2020-05-18 18:15:16 [main] [INFO]  KGenProgMain - GA stopped.
2020-05-18 18:15:16 [main] [INFO]  Patch - 
 --- example.CloseToZero
 +++ example.CloseToZero
@@ -16,7 +16,6 @@
    */
   public int close_to_zero(int n) {
     if (n == 0) {
 -       n++; // bug here
     } else if (n > 0) {
       n--;
     } else {
+ 2020-05-18 18:15:16 [main] [INFO]  KGenProgMain - Overall
+ Generation = 10
+ Generated variants = 100
+ Syntax valid variants = 35
+ Build succeeded variants = 31
+ Time elapsed = 631sec
+ Exit status = SUCCESS

失敗時は

Exit status = SUCCESS

の代わりに

Exit status = FAIL(maximum generation)

Exit status = FAIL(time limit)

[RyokoIzuta]

relating to #456

[RyokoIzuta]

次のものも追加候補（メモ）

• ビルド・テストの平均時間
• insert何割
• mutation割合
• ビルド・失敗割合