seeking clearance to commit Gtk2::Simple::Tree (and Gtk2::Simple::List) to HEAD

[Ross McFarland <rwmcfa1 neces com>]

i've got a moved/restructured/shared code version of the simple family.
tree is actually working. there's doc/comments and improvements to come,
but it works. i'd like to get it in so that others can take a look and
so that i'll have it in revision control.

the following files and a really simple/stupid example would be added

$ ll pm/Simple/
total 32
-rw-r--r--  1 rmcfarla users 5202 Apr  4 21:47 List.pm
-rw-r--r--  1 rmcfarla users 2650 Apr  4 21:46 TiedCommon.pm
-rw-r--r--  1 rmcfarla users 3993 Apr  4 21:39 TiedList.pm
-rw-r--r--  1 rmcfarla users 7898 Apr  7 21:56 TiedTree.pm
-rw-r--r--  1 rmcfarla users 5202 Apr  7 19:10 Tree.pm

this is bound for 1.060 (won't be in any of the 1.040 series) and should
have absolutely no problems making that time-frame. there's no shortage
of stuff left to do, but it works. i'm happy with the end design.

as of now this is a separate version of SimpleList, but eventually the
old should be wrapped (and possibly deprecated) into this new name
space. there's several issues to be addressed there, none of which i
have looked into yet.

this also should allow for a simple option menu that's been discussed in
the past as TiedList/Row have been pulled out.

any objections?
-rm