BaseTools: Correct bin wrappers for GenDepex.py path

The WindowsLike and PosixLike bin wrappers for GenDepex.py do not use
correct path. GenDepex.py is not in a GenDepex directory. Instead, it is
in the AutoGen directory.

Fixes: https://bugzilla.tianocore.org/show_bug.cgi?id=292
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

BaseTools/BinWrappers/PosixLike/GenDepex

@@ -11,4 +11,4 @@ dir=$(dirname "$full_cmd")
 cmd=${full_cmd##*/}
 
 export PYTHONPATH="$dir/../../Source/Python"
-exec "${python_exe:-python}" "$dir/../../Source/Python/$cmd/$cmd.py" "$@"
+exec "${python_exe:-python}" "$dir/../../Source/Python/AutoGen/$cmd.py" "$@"

BaseTools/BinWrappers/WindowsLike/GenDepex.bat

@@ -1,3 +1,3 @@
 @setlocal
 @set ToolName=%~n0%
-@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\%ToolName%\%ToolName%.py %*
+@%PYTHON_HOME%\python.exe %BASE_TOOLS_PATH%\Source\Python\AutoGen\%ToolName%.py %*