BUG: otbenv.cmd -> otbenv.bat

with .cmd extension users cannot easily understand it is a
shell script. windows typical .bat for scripts.
So I hope this will make it crystal clear now!

Packaging/Files/mapla.bat

@@ -8,7 +8,7 @@ setlocal
 set CURRENT_SCRIPT_DIR=%~dp0
 
 :: Setup environment
-call %CURRENT_SCRIPT_DIR%otbenv.cmd
+call %CURRENT_SCRIPT_DIR%otbenv.bat
 
 :: Set current dir to HOME dir because Monteverdi generates temporary files and need write access
 cd %HOMEDRIVE%%HOMEPATH%

Packaging/Files/monteverdi.bat

@@ -8,7 +8,7 @@ setlocal
 set CURRENT_SCRIPT_DIR=%~dp0
 
 :: Setup environment
-call %CURRENT_SCRIPT_DIR%otbenv.cmd
+call %CURRENT_SCRIPT_DIR%otbenv.bat
 
 :: Set current dir to HOME dir because Monteverdi generates temporary files and need write access
 cd %HOMEDRIVE%%HOMEPATH%

Packaging/Files/selftester.bat

@@ -20,7 +20,7 @@ wmic PROCESS where "Name='WMIC.exe'" get ParentProcessId >pid.log 2>&1
 for /F "TOKENS=1" %%b in ('type pid.log ^| findstr [0-9]') do set CURRENT_PID=%%b
 
 :: setup the otbenv
-call otbenv.cmd
+call otbenv.bat
 
 del selftest_report.log
 type NUL > selftest_report.log