Windows WML tests: Keep account of executed tests

The final report now includes the number of
 - tests that were executed
 - tests thereof that failed

projectfiles/VC9/WML_tests.cmd

@@ -8,10 +8,9 @@ setlocal enabledelayedexpansion
 set LoadFile=%~p0..\..\wml_test_schedule
 set binary=wesnoth.exe
 set opt=--log-strict=warning
-:: OutDir is necessary for VC debug configuration, defaults to wesnoth\
-if "%1"=="" ( set "OutDir=..\..\") else ( set "OutDir=%~p1")
+:: executable path can be set for VC debug configuration, defaults to wesnoth\
+if "%1"=="" ( cd ..\..\ ) else ( cd %~p1 )
 
-cd %OutDir%
 echo running WML tests:
 
 :: ignore lines beginning with #
@@ -28,12 +27,15 @@ for /f "eol=# tokens=1,2 delims= " %%G in (%LoadFile%) do (
             echo(
             echo WML_tests.cmd: Error WML1: Test '%%H' returned !ERRORLEVEL!, expected %%G
         )
+        set /a "fail_num+=1"
     )
     :: minimalistic progress bar
     <nul (set/p progress=.)
+    set /a "test_num+=1"
 )
 echo(
-echo WML tests completed
+if not DEFINED fail_num ( set "fail_num=none" )
+echo %test_num% WML tests completed, %fail_num% of them failed
 
 :: restore the state before execution
 cd %~p0