Update tests

Author: fhahn

src/test/compile-fail/issue-25385.rs

@@ -18,6 +18,6 @@ fn main() {
     let a = 1i32;
     foo!(a);
 
-    foo!(1.i32.foo());
+    foo!(1i32.foo());
     //~^ ERROR attempted access of field `i32` on type `_`, but no field with that name was found
 }

src/test/compile-fail/issue-26093.rs

@@ -16,5 +16,7 @@ macro_rules! not_an_lvalue {
 }
 
 fn main() {
+
+    0 = 42;
     not_an_lvalue!(99);
 }

src/test/compile-fail/issue-26480.rs

@@ -24,7 +24,7 @@ macro_rules! write {
         unsafe {
             write(stdout, $arr.as_ptr() as *const i8,
                   $arr.len() * size_of($arr[0]));
-            //~^ ERROR mismatched types: expected `u64`, found `usize`
+            //~^ ERROR mismatched types
         }
     }}
 }

src/test/compile-fail/issue-28308.rs

@@ -10,5 +10,5 @@
 
 fn main() {
     assert!("foo");
-    //~^ ERROR cannot apply unary operator `!` to type `&'static str`'`
+    //~^ ERROR cannot apply unary operator `!` to type `&'static str`
 }

src/test/compile-fail/issue-29084.rs

@@ -12,7 +12,7 @@ macro_rules! foo {
     ($d:expr) => {{
         fn bar(d: u8) { }
         bar(&mut $d);
-        //~^ ERROR mismatched types: expected `u8`, found `&mut u8`
+        //~^ ERROR mismatched types
     }}
 }