Ensure that plugins are output in the correct directory

Grantlee requires that the plugins be in

 prefix/grantlee/$version/

but without these settings, cmake instead puts the plugins in

 prefix/grantlee/$version/{Debug,Release}

cmake/modules/GrantleeMacros.cmake

@@ -8,4 +8,12 @@ macro(grantlee_adjust_plugin_name pluginname)
     RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/grantlee/${Grantlee5_VERSION_MAJOR}.${Grantlee5_VERSION_MINOR}"
     DEBUG_POSTFIX "d"
   )
+  foreach(cfg ${CMAKE_CONFIGURATION_TYPES})
+    string(TOUPPER ${cfg} CFG)
+    set_target_properties(${pluginname}
+      PROPERTIES
+      LIBRARY_OUTPUT_DIRECTORY_${CFG} "${CMAKE_BINARY_DIR}/grantlee/${Grantlee5_VERSION_MAJOR}.${Grantlee5_VERSION_MINOR}"
+      RUNTIME_OUTPUT_DIRECTORY_${CFG} "${CMAKE_BINARY_DIR}/grantlee/${Grantlee5_VERSION_MAJOR}.${Grantlee5_VERSION_MINOR}"
+      )
+  endforeach()
 endmacro()