[Seaside] default exception handler WAWalkbackErrorHandler only present in development, not runtime

[Thomas Brodt]

Hi

in Seaside (3.2.0 - JohanBrichau.85 1 in the Visualworks 8.3 port) class 
WAEnvironment installs WAWalkbackErrorHandler as default 
exceptionHandler in method 
#configureApplicationExceptionHandlingDefaults called from initialize. 
But WAWalkbackErrorHandler is included in package Seaside-Development, 
so if you build runtimes without Seaside development packages, this 
fails because WAWalkbackErrorHandler is not present in such runtime images.

Shouldn't rather WAHtmlErrorHandler be used as default exception handler 
which is in the same package as WAEnvironment? And then maybe replaced 
by WAWalkbackErrorHandler if you additionally load development?

Any thoughts?

Thomas