[test] Update tests to include location string.

test/libsolidity/syntaxTests/variableDeclaration/do_while.sol

@@ -9,4 +9,4 @@ contract C
 	}
 }
 // ----
-// SyntaxError 9079: (81-87): Variable declarations can only be used inside blocks.
+// SyntaxError 9079: (81-87='uint y'): Variable declarations can only be used inside blocks.

test/libsolidity/syntaxTests/variableDeclaration/else.sol

@@ -10,4 +10,4 @@ contract C
 	}
 }
 // ----
-// SyntaxError 9079: (109-115): Variable declarations can only be used inside blocks.
+// SyntaxError 9079: (109-115='uint z'): Variable declarations can only be used inside blocks.

test/libsolidity/syntaxTests/variableDeclaration/for.sol

@@ -8,4 +8,4 @@ contract C
 	}
 }
 // ----
-// SyntaxError 9079: (107-113): Variable declarations can only be used inside blocks.
+// SyntaxError 9079: (107-113='uint y'): Variable declarations can only be used inside blocks.

test/libsolidity/syntaxTests/variableDeclaration/if.sol

@@ -8,4 +8,4 @@ contract C
 	}
 }
 // ----
-// SyntaxError 9079: (89-95): Variable declarations can only be used inside blocks.
+// SyntaxError 9079: (89-95='uint y'): Variable declarations can only be used inside blocks.

test/libsolidity/syntaxTests/variableDeclaration/illegal_names.sol

@@ -12,19 +12,19 @@ contract D {
 	struct _ { uint super; }
 }
 // ----
-// DeclarationError 3726: (0-22): The name "this" is reserved.
-// DeclarationError 3726: (24-47): The name "super" is reserved.
-// DeclarationError 3726: (49-68): The name "_" is reserved.
-// DeclarationError 3726: (84-96): The name "this" is reserved.
-// DeclarationError 3726: (99-108): The name "super" is reserved.
-// DeclarationError 3726: (111-141): The name "_" is reserved.
-// DeclarationError 3726: (160-174): The name "this" is reserved.
-// DeclarationError 3726: (177-201): The name "_" is reserved.
-// DeclarationError 3726: (188-198): The name "super" is reserved.
-// Warning 2519: (84-96): This declaration shadows an existing declaration.
-// Warning 2519: (99-108): This declaration shadows an existing declaration.
-// Warning 2519: (111-141): This declaration shadows an existing declaration.
-// Warning 2519: (160-174): This declaration shadows an existing declaration.
-// Warning 2519: (177-201): This declaration shadows an existing declaration.
-// Warning 2319: (0-22): This declaration shadows a builtin symbol.
-// Warning 2319: (24-47): This declaration shadows a builtin symbol.
+// DeclarationError 3726: (0-22='uint constant this = 1'): The name "this" is reserved.
+// DeclarationError 3726: (24-47='uint constant super = 2'): The name "super" is reserved.
+// DeclarationError 3726: (49-68='uint constant _ = 3'): The name "_" is reserved.
+// DeclarationError 3726: (84-96='address this'): The name "this" is reserved.
+// DeclarationError 3726: (99-108='int super'): The name "super" is reserved.
+// DeclarationError 3726: (111-141='mapping (address => address) _'): The name "_" is reserved.
+// DeclarationError 3726: (160-174='address[] this'): The name "this" is reserved.
+// DeclarationError 3726: (177-201='struct _ { uint super; }'): The name "_" is reserved.
+// DeclarationError 3726: (188-198='uint super'): The name "super" is reserved.
+// Warning 2519: (84-96='address this'): This declaration shadows an existing declaration.
+// Warning 2519: (99-108='int super'): This declaration shadows an existing declaration.
+// Warning 2519: (111-141='mapping (address => address) _'): This declaration shadows an existing declaration.
+// Warning 2519: (160-174='address[] this'): This declaration shadows an existing declaration.
+// Warning 2519: (177-201='struct _ { uint super; }'): This declaration shadows an existing declaration.
+// Warning 2319: (0-22='uint constant this = 1'): This declaration shadows a builtin symbol.
+// Warning 2319: (24-47='uint constant super = 2'): This declaration shadows a builtin symbol.

test/libsolidity/syntaxTests/variableDeclaration/while.sol

@@ -8,4 +8,4 @@ contract C
 	}
 }
 // ----
-// SyntaxError 9079: (92-98): Variable declarations can only be used inside blocks.
+// SyntaxError 9079: (92-98='uint y'): Variable declarations can only be used inside blocks.