[CM] Snd 16.2

[bil at ccrma.Stanford.EDU]

Snd 16.2:

owlet error-history field if WITH_HISTORY=1, (*s7* 'history-size) sets 
its size
added *read-error-hook*
removed s7_eval_form, changed s7_eval to take its place
s7_eval_c_string takes only one statement now (use begin to handle 
multiple statements)
added s7_load_with_environment

checked: gtk 3.19.4|5|6, ruby 2.4

Thanks!: Kjetil Matheussen, Anders Vinjar, Tito Latini, Mike Scholz.