runtime: fix for thread safety issue during simultaneous use of stream tags and performance counters
runtime: forgot to go back to the 'old' style using gruel.
utils: fix modtool template output signature
modtool: fixed some setup for noblock gen.
wxgui: make dummy set_callback stub in nongl sinks.

Doesn't work, but also doesn't break the code.
modtool: fix typo in help string
Merge branch 'maint' into maint-wxgui