Problem: getwinvar() returns wrong Value of boolean and number options,
especially non big endian systems. (James McCoy)
Solution: Cast the pointer to long or int. (closes#1060)
Problem: getwininfo() and getbufinfo() are inefficient.
Solution: Do not make a copy of all window/buffer-local options. Make it
possible to get them with gettabwinvar() or getbufvar().
Problem: The field names used by getbufinfo(), gettabinfo() and
getwininfo() are not consistent.
Solution: Use bufnr, winnr and tabnr. (Yegappan Lakshmanan)
Problem: It's not easy to find out if a window is a quickfix or location
list window.
Solution: Add "loclist" and "quickfix" entries to the dict returnec by
getwininfo(). (Yegappan Lakshmanan)
Problem: It is not easy to get information about buffers, windows and
tabpages.
Solution: Add getbufinfo(), getwininfo() and gettabinfo(). (Yegappan
Lakshmanan)
