Deprecate throw.

test/libsolidity/SolidityNameAndTypeResolution.cpp

@@ -5860,6 +5860,18 @@ BOOST_AUTO_TEST_CASE(using_interface_complex)
 	success(text);
 }
 
+BOOST_AUTO_TEST_CASE(warn_about_throw)
+{
+	char const* text = R"(
+		contract C {
+			function f() {
+				throw;
+			}
+		}
+	)";
+	CHECK_WARNING(text, "\"throw\" is deprecated");
+}
+
 BOOST_AUTO_TEST_CASE(bare_revert)
 {
 	char const* text = R"(