add missing lib dependency to pd release structure for windows
Moved fdpoll init code into it's own function sys_init_fdpoll() that can be called independently of sys_startgui needing to run, such as in the case of libpd.
tweaks to reverberators
Fix MIDI input to look at pd instance so that calls to inmidi_byte() etc
only go to the current pd instance
Ability to dispatch messages from running Pd patches to loaded tcl plugins.
Merge dnd:pd
improved comment in d_osc.c
lower (much better) early reflection times in rev2~
fix for bug 3613962 - bug with special characters
fixed INT_MIN % -1 bug (reported by Claude Heiland)
new help menu option to open "intro" patch
For some reason the wish script failes if HOME isn't defined.  Fixed
s_inter.c to supply one if there's none.  This is a workaround - really
it would be best to figure out where the tcl script is failing.
got rid og tags file
Fixed phase measurement sign error (now shows phase response, not
phase delay, as it had incorrecty shown before).  Fixed H10 and
H14 graphs in audio examples to show correct results.
fixed H11 to agree with the figure in the book
removed check to see if "card numbers" in ALSA were in 0, 1, 2, ...
order because apparently they aren't always but apparently it doesn't
hurt anything that they're not.
Use default searchpaths for stdlib/stdpath

the [declare] object allows to add search-paths and load libraries,
relative to the "Pd installation".
However, it does not honour the "standard" (immutable) search-paths
(as stored in `sys_staticpath`).

This patch will make '-stdpath' and '-stdlib' use all "standard" search-paths.

When using the "standard" search-paths, any leading "extra/" will be stripped.

This allows to use [declare -stdlib zexy], which will load the "zexy"
library if it can be found in one of ~/pd-externals, /usr/local/lib/pd-externals
/usr/local/lib/pd/extra/ (in case Pd is installed in /usr/local)
'textfile' -. 'text' in help intro
updates to 2 help windows and slight cleanup to IEM GUI
inished editing GUI from previous commit, and vd~ deals with empty symbol