*restructured pdsend messages used by sys_gui object so that they are forward and backward compatible.

first stab at porting core GUI to tkpath with SVG goodness. new scrollbars that will hopefully put an end to the old painful scrollbar nonsense. pdtk_tip clean-up and improvements. tons of other small bug fixes. a number of issues/wishlists still exist before the next big release:
*improve g_array lower/raise to use new functionality (BUG! doesn't match any items)
*scalar is drawn behind at first
*Scope~ window name "h16ffd10" already exists in parent (likely resize hook)
	*Change appearance of the resize hook
*better getrect for scalars inside plot?
*reenable bgerror and t_tkcmd catch
*Clean-up and merge cyclone documentation

added verbose error reporting (based on Iohannes Zmoelnig's patch) on console from tcl side in case something is missing on startup (e.g. tkpng package).

lowered the readsize (EXPERIMENTAL) from 10K to 2000 (originally) 1000. 10K caused high probability of xruns, while 1000 could result in stack overflow in gui-heavy patches.

implemented universal catch{} for all commands sent from c to tcl to minimize (eradicate?) stderr output.

working on new dialog windows
updates to 14.partialtracer and sigmund~