execution namespace reform: - add execution namespace to proc context instead of altering the namespace of the command - this fixes strange behavior of "info commands ::o::p", which might have returned "::p" - provide compatibility with Tcl 8.7a2 - extend regression test
* nsf.c, nsfInt.h: Start housekeeping work on Tcl command/proc names vs. NSF method names to avoid conflicts between ensemle methods and e.g. whitespace-containing command names. Added helper macro NsfHasTclSpace and some first tests. To be continued.