logic: std::signal instead of sigaction

* commandline test cout redirect
[skip ci]

src/test/CommandlineTestSuite.h

@@ -73,10 +73,15 @@ public:
 			"/opt/testpath/mvn"
 		});
 
+		std::stringstream redStream;
+		auto oldBuf = std::cout.rdbuf( redStream.rdbuf() );
+
 		commandline::CommandLineParser parser("2");
 		parser.preparse(args);
 		parser.parse();
 
+		std::cout.rdbuf( oldBuf );
+
 		FilePath path = ApplicationSettings::getInstance()->getMavenPath();
 		TS_ASSERT_EQUALS( path.str(), "/opt/testpath/mvn")