Restrict mobile types of function types.

Move ternary tests to semanticTests

test/libsolidity/semanticTests/functionTypes/selector_ternary.sol

@@ -0,0 +1,10 @@
+contract C {
+	function f() public {}
+	function g() public {}
+	function h(bool c) public returns (bytes4) {
+		return (c ? this.f : this.g).selector;
+	}
+}
+// ----
+// h(bool): true -> 0x26121ff000000000000000000000000000000000000000000000000000000000
+// h(bool): false -> 0xe2179b8e00000000000000000000000000000000000000000000000000000000

test/libsolidity/semanticTests/functionTypes/selector_ternary_function_pointer_from_function_call.sol

@@ -0,0 +1,19 @@
+contract A {
+    function f() public {}
+	function g() public {}
+}
+
+contract C {
+    A a = new A();
+
+    function getContract() public view returns (A) {
+        return a;
+    }
+
+    function test(bool b) public view returns (bytes4) {
+        return (b ? getContract().f : getContract().g).selector;
+    }
+}
+// ----
+// test(bool): true -> 0x26121ff000000000000000000000000000000000000000000000000000000000
+// test(bool): false -> 0xe2179b8e00000000000000000000000000000000000000000000000000000000

test/libsolidity/semanticTests/functionTypes/ternary_contract_internal_function.sol

@@ -0,0 +1,10 @@
+contract C {
+    function f() internal pure returns(uint256) { return 1;}
+    function g() internal pure returns(uint256) { return 2; }
+    function test(bool b) public returns(uint256) {
+        return (b ? C.f : C.g)();
+    }
+}
+// ----
+// test(bool): true -> 1
+// test(bool): false -> 2

test/libsolidity/semanticTests/functionTypes/ternary_contract_library_internal_function.sol

@@ -0,0 +1,13 @@
+library L {
+    function f() internal pure returns(uint256){ return 1; }
+}
+
+contract C {
+    function g() internal pure returns(uint256) { return 2; }
+    function test(bool b) public returns(uint256) {
+        return (b ? L.f : C.g)();
+    }
+}
+// ----
+// test(bool): true -> 1
+// test(bool): false -> 2

test/libsolidity/semanticTests/functionTypes/ternary_contract_public_function.sol

@@ -0,0 +1,10 @@
+contract C {
+    function f() public pure returns(uint256) { return 1; }
+    function g() public pure returns(uint256) { return 2; }
+    function test(bool b) public returns(uint256) {
+        return (b ? C.f : C.g)();
+    }
+}
+// ----
+// test(bool): true -> 1
+// test(bool): false -> 2