* remove unnecessary commented tcl code
* group var declarations (and some assignments) together
* remove unneeded debugging messsages
* proper indentation
* revise comments where needed

simplify GUI-side parser, and send raw (i.e., old) sys_vgui and sys_gui calls to just post to the console

Fix nasty bug with array name not updating properly on its graph, plus a more trivial bug with the canvas properties not getting updated properly

set gui_canvas_getscroll timeouts per window. This has a nasty side-effect of creating unnecessary scrollbars when many patches are opened at once

only add a new span when the string to be posted ends in a newline
show tally in brackets for repeated errors

fix regression with saveas/open callbacks not getting called, plus a minor fix for showing the file extension in the dialog

port portaudio/portmidi sources from pd 0.46-7. I left the full stable releases in the commits before this so that we can eventually just use those, but atm it's proving to be too complicated to use the stable pa/pm releases.

update configure.in for portmidi sources. Like portaudio, we need to use its build system in the future

update portaudio to pa's recommended stable SVN rev 1919 (used tarball, and one of the docs wrt windows is changed from svn rev 1919, but whatever)

attempt to show the correct directory in a "Save" dialog.  (Still doesn't work for the "Open" dialog.)