UPBGE: Rename async parameter from LibLoad as is a reserved word (#827)

Rename async parameter from LibLoad as is a reserved word in Python 3.7

A note will be included in Release notes as this breaks compatibility with old scripts.

doc/python_api/rst/bge.logic.rst

@@ -185,7 +185,7 @@ General functions
 
    Restarts the current game by reloading the .blend file (the last saved version, not what is currently running).
 
-.. function:: LibLoad(blend, type, data, load_actions=False, verbose=False, load_scripts=True, async=False, scene=None)
+.. function:: LibLoad(blend, type, data, load_actions=False, verbose=False, load_scripts=True, asynchronous=False, scene=None)
 
    Converts the all of the datablocks of the given type from the given blend.
 
@@ -201,8 +201,8 @@ General functions
    :type verbose: bool
    :arg load_scripts: Whether or not to load text datablocks as well (can be disabled for some extra security)
    :type load_scripts: bool   
-   :arg async: Whether or not to do the loading asynchronously (in another thread). Only the "Scene" type is currently supported for this feature.
-   :type async: bool
+   :arg asynchronous: Whether or not to do the loading asynchronously (in another thread). Only the "Scene" type is currently supported for this feature.
+   :type asynchronous: bool
    :arg scene: Scene to merge loaded data to, if `None` use the current scene.
    :type scene: :class:`bge.types.KX_Scene` or string
 

doc/python_api/rst/bge_types/bge.types.KX_LibLoadStatus.rst

@@ -15,7 +15,7 @@ base class --- :class:`EXP_PyObjectPlus`
       def finished_cb(status):
           print("Library (%s) loaded in %.2fms." % (status.libraryName, status.timeTaken))
 
-      bge.logic.LibLoad('myblend.blend', 'Scene', async=True).onFinish = finished_cb
+      bge.logic.LibLoad('myblend.blend', 'Scene', asynchronous=True).onFinish = finished_cb
 
    .. attribute:: onFinish
 

source/gameengine/Ketsji/KX_PythonInit.cpp

@@ -642,11 +642,11 @@ static PyObject *gLibLoad(PyObject *, PyObject *args, PyObject *kwds)
 	KX_LibLoadStatus *status = nullptr;
 
 	short options = 0;
-	int load_actions = 0, verbose = 0, load_scripts = 1, async = 0;
+	int load_actions = 0, verbose = 0, load_scripts = 1, asynchronous = 0;
 
 	if (!EXP_ParseTupleArgsAndKeywords(args, kwds, "ss|y*iiIiO:LibLoad",
-	                                   {"path", "group", "buffer", "load_actions", "verbose", "load_scripts", "async", "scene", 0},
-	                                   &path, &group, &py_buffer, &load_actions, &verbose, &load_scripts, &async, &pyscene)) {
+	                                   {"path", "group", "buffer", "load_actions", "verbose", "load_scripts", "asynchronous", "scene", 0},
+	                                   &path, &group, &py_buffer, &load_actions, &verbose, &load_scripts, &asynchronous, &pyscene)) {
 		return nullptr;
 	}
 
@@ -667,7 +667,7 @@ static PyObject *gLibLoad(PyObject *, PyObject *args, PyObject *kwds)
 	if (load_scripts != 0) {
 		options |= BL_Converter::LIB_LOAD_LOAD_SCRIPTS;
 	}
-	if (async != 0) {
+	if (asynchronous != 0) {
 		options |= BL_Converter::LIB_LOAD_ASYNC;
 	}