This makes it possible to define an editable viewport outside of which the
contents are clipped.

One big benefit is that the getrect routine doesn't need to fetch the bboxes
of the shapes inside the viewport. It just needs the svg width, height, x,
y, and parent transform. It's also possible to add an optimized branch if
there is no parent transform specified.

One drawback is that the HTML5 method getBBox() includes the clipped content
in its calculation. That means the user will get scrollbars even though the
[draw svg] is clipping the contents which cause the scrollbars. Hopefully we
can just work around this by adding a "scrollbars" method for canvases to
just turn them off altogether.

Code for an experimental [draw array] is also added here. Combining it with
the viewport of [draw svg] will make it possible to interact with arrays of
widgets without the performance penalty normally associated with mouse
motion on Pd canvases.

Also:
* fixes some display bugs...

strings

bugfix for consistency check failure when undoing a deleted [draw] command that has a scalar on the same canvas

revert a change to text_setto from 91cf2a84 that caused a subtle regression when a broken object gets retexted.  (It caused the object to be put at the end of the glist, which caused the consequent canvas_restoreconnections call to make a wire connection to the wrong object)

That whole function is a nasty mess that needs to be refactored

First stab at making the "Cancel" button in gatom dialog actually revert to the previously saved values.

only put a new message box in floating mode (i.e., following the mouse) if it doesn't have an autopatch connection to the object above it

changed the interface for canvas_objtext, but it's not public so that shouldn't be a problem

changed the interface for canvas_objtext, but it's not public so that shouldn't be a problem

*added message object's ability to parse $0 (as per http://lists.puredata.info/pipermail/pd-list/2014-09/107785.html)

fix regression with [pd] not respecting new box dimensions when renaming to [pd foo]. Also, comment out more sys_vgui calls in g_canvas.c

from pd-l2ork: 7ad47e188a941508b92e3c96bc9e05432fbb88f7

got a very early working version that does _all_ object text editing (arrow keys, selection, etc.) in the GUI. (However, it still depends on g_rtext.c for doing everything else.)