tools/msvc/starpu_exec.bat: update version number and return error code on error

tools/msvc/starpu_exec.bat

@@ -31,13 +31,12 @@ mkdir starpu
 FOR %%F IN (%STARPUPATH%\bin\*dll) DO COPY %%F starpu\%%~nF
 FOR %%F IN (%STARPUPATH%\bin\*dll) DO COPY %%F starpu
 COPY c:\MinGW\bin\pthreadGC2.dll starpu
-COPY %STARPUPATH%\lib\libstarpu-1.0.lib starpu
+COPY %STARPUPATH%\lib\libstarpu-1.2.lib starpu
 
 set OLDPATH=%PATH%
 call "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat" x86
 echo cd starpu
-echo dir %STARPUPATH%\include\starpu\1.0
-cl %1 /I%STARPUPATH%\include\starpu\1.0 /link starpu\libstarpu-1.0.lib
+cl %1 /I%STARPUPATH%\include\starpu\1.2 /link starpu\libstarpu-1.2.lib
 
 set PATH=starpu;%PATH%
 .\%~n1.exe
@@ -48,11 +47,13 @@ GOTO end
 :invalidparam
   ECHO.
   ECHO Syntax error. You need to give the name of a StarPU application
+  EXIT /B 2
   GOTO end
 
 :starpunotfound
   ECHO.
   ECHO You need to set the variable STARPUPATH to a valid StarPU installation directory
+  EXIT /B 1
   GOTO end
 
 :end