[TravisCI] haxe-output: record the removals of files

tests/RunCi.hx

@@ -850,7 +850,7 @@ class RunCi {
 				runCommand("cp", ["-rf", orig, dest]);
 			}
 			changeDirectory(haxe_output);
-			runCommand("git", ["add", haxe_output]);
+			runCommand("git", ["add", "--all", haxe_output]);
 			var commitMsg = [
 				'-m', '${Sys.getEnv("TRAVIS_JOB_NUMBER")} ${TEST} https://github.com/HaxeFoundation/haxe/commit/${gitInfo.commit}',
 				'-m', 'https://travis-ci.org/HaxeFoundation/haxe/jobs/${Sys.getEnv("TRAVIS_JOB_ID")}',