*tried adding scalehandle_free to the canvas_free class but is currently commented out until we figure out why is this causing a segfault...

*cosmetic fixes to g_canvas.c

remove canvas/glist arg in a bunch of recently added iemgui functions, and introduce iemgui_draw_move & iemgui_draw_config

*improved g_all_guis.c and detection/drawing of handles

*fixed remaining g_number.c regressions. Now need to match this with the rest of the iemgui objects.

*fixed handle behavior on iemguis (current implementation is not equipped to deal with config kind of actions, and it does not have to)
*streamlined GOP handles since now draw_select deals with explicit delete before redraw

*fixed send and receive functions so that they properly update number2

*added selected tag to scalehandles since they should only appear when things are selected (or as is the case with GOP, when nothing else is selected)
*fixed regression in number2 where after dialog it requires complete redraw

Merge branch 'master' of git://github.com/pd-l2ork/pd

Conflicts:
	pd/src/g_all_guis.c
	pd/src/g_vumeter.c

Still need to fix the label reselection after it has been added/removed.
*fixed vu meter having bogus scale values when changing the label and some out-of-sync selection issues with the dialog. Needs to be vetted like number2.

*began working on clean-up of iemgui regressions and preexisting bugs (still need to figure out inconsistency with the hiding/showing of nlets, as well as inability to displace number2 after it has received a label message)

give IEMGUI externals their own copy of the old functions so that the new impl of g_all_guis.c can evolve freely

suppress creation of drawcurve, drawnumber, drawsymbol and plot when the user tries to create them inside a group.  (Currently their click and motionfns don't take the parent transformation matrix into account)