updated for version 7.3.962
Problem:    Python tests are not portable.
Solution:   Use shiftwidth instead of iminsert. (ZyX)
Added tag v7-3-962 for changeset 0a94ac379769
updated for version 7.3.963
Problem:    Setting curbuf without curwin causes trouble.
Solution:   Add switch_buffer() and restore_buffer().  Block autocommands to
	    avoid trouble.
Added tag v7-3-963 for changeset 7eafa576528e
updated for version 7.3.964
Problem:    Python: not so easy to access tab pages.
Solution:   Add window.tabpage, make window.number work with non-current tab
	    pages. (ZyX)
Added tag v7-3-964 for changeset 7d81f4e96728
updated for version 7.3.965
Problem:    Python garbage collection not working properly.
Solution:   Add support for garbage collection. (ZyX)
Added tag v7-3-965 for changeset 8a3ca4adb5d8
updated for version 7.3.966
Problem:    There is ":py3do" but no ":pydo".
Solution:   Add the ":pydo" command. (Lilydjwg)
Added tag v7-3-966 for changeset 9b800f0a757f
Update runtime files.