updated for version 7.3.1159
Problem:    The round() function is not always available. (Christ van
	    Willegen)
Solution:   Use the solution from f_round().
Added tag v7-3-1159 for changeset 208a6c04e6b8
updated for version 7.3.1160
Problem:    Mixing long and pointer doesn't always work.
Solution:   Avoid cast to pointer.
Added tag v7-3-1160 for changeset 60301d4d1682
updated for version 7.3.1161
Problem:    Python: PyList_SetItem() is inefficient.
Solution:   Use PyList_SET_ITEM() (ZyX)
Added tag v7-3-1161 for changeset ff3935926449
updated for version 7.3.1162
Problem:    Python: Memory leaks
Solution:   Add more Py_DECREF(). (ZyX)
Added tag v7-3-1162 for changeset b8eabb6a9687
updated for version 7.3.1163
Problem:    Not easy to load Python modules.
Solution:   Search "python2", "python3" and "pythonx" directories in
	    'runtimepath' for Python modules. (ZyX)
Added tag v7-3-1163 for changeset 70b1178dec79