More colors, Bezier cords

added many more colors (documented in doc/7.stuff/colors-plugin.txt)
colors have changed names
to get started with colors: move colors-plugin.txt into your pd path and change the extension to .tcl. Then change the values below "array set ::pd_colors {" using values from a hex color picker, or tk color names.

added option to use tk Bezier cords (don't look great, selection is a bit off), however the functions to draw the cords have been moved to tcl code, allowing gui plugins to overwrite them (this allows patch cables to look however the tcl plugin author might want, with whatever tk can do)

also added preference menu item for bezier cords
they can also be turned on/off by setting the tcl variable "::curve_cords" e.g. "set ::curve_cords 1"

A couple fixes for help menu getting greyed-out on osx, and to display the array name when it's created

edit: fixed message/audio cable bug 8:10 PST 6/6/2020

0.49-0n: fix cord bugs in g_canvas.c

0.48-1: update to 0.48.1, fix rebase

Pd Version 0.48-1
OSX app is 64 bit

Pd 0.48 mod

This is a mod of Pure Data version 0.48.0

Features:
Color themes
[initbang] and [closebang] included

only tested on OS X