Attach private to "no doc"ed symbols in the standard module VisualDebug
Attach private to "no doc"ed symbols in the standard module VisualDebug

These symbols all seemed to be intended for module-local use only and were
marked with "no doc".  When chpldoc can react appropriately to private symbols,
the pragmas can be removed.

CoryMcCartan/chapel,chizarlicious/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,chizarlicious/chapel,chizarlicious/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel