Object Icon updates

There are  Version 2.5 updates to three topics at the code.google Object Icon wiki.
These are

1. co-expressions
2. built-in functions
3. implementation notes

Btw, for my Cygwin build I needed to alias gawk as awk with an s-link and it happened that I had to start xwin with

/usr/bin/startxwin -- -nolock

due to some update glitch with Cygwin.
A run of

make test

gave one error which is likely a Cygwin issue on file permissions.

The Icon Visual Interface Builder, ivib, ran fine and my own test app tested OK. Remember to have at least one button with an event that you can code as exit().