Oops, forgot one little change

(now sln files can have slnx suffix, this changes a bit the test for
succes in configure.bat)

Author: BrunoLevy

configure.bat

@@ -47,7 +47,7 @@ REM -----------------------------------------------------------------
 
 ECHO ----------------------------------------------------------------
 
-if exist "Geogram.sln" (
+if exist "Geogram.sln*" (
    ECHO Geogram build is configured
    ECHO Visual Studio solution is in GraphiteThree\build\Windows%buildNameSuffix%\Geogram.sln
 ) else (