Rename `example-windows` as `example-windows.exe`.

Because this is the usual naming convention on Windows, and will make
Breakpad symbols testing on Windows easier.

src/tests.rs

@@ -112,10 +112,10 @@ fn test_windows() {
 
     let mut fixer = Fixer::new(JsonMode::Yes, None);
 
-    // Test various addresses using `example-windows`, which redirects to
+    // Test various addresses using `example-windows.exe`, which redirects to
     // `example-windows.pdb`.
     let mut func = |name, addr, linenum| {
-        let line = format!("#00: ???[tests/example-windows +0x{:x}]", addr);
+        let line = format!("#00: ???[tests/example-windows.exe +0x{:x}]", addr);
         let line = fixer.fix(line);
         assert_eq!(
             line,

tests/README.md

@@ -35,12 +35,12 @@ clang -g example.c -o example-linux
 
 ### Windows
 
-`example-windows` and `example-windows.pdb` were produced on a Windows 10 laptop
- by clang 9.0 with this command:
+`example-windows.exe` and `example-windows.pdb` were produced on a Windows 10
+ laptop by clang 9.0 with this command:
 ```
-clang -g example.c -o example-windows
+clang -g example.c -o example-windows.exe
 ```
-`example-windows` was then hex-edited to change the PDB reference from the
+`example-windows.exe` was then hex-edited to change the PDB reference from the
 absolute path `c:\Users\njn\moz\fix-stacks\tests\example-windows.pdb` to the
 relative path `tests/////////////////////////////example-windows.pdb`. (The use
 of many redundant forward slashes is a hack to keep the path the same length,