DBG: fixed a bug in the definition of disasm_fast.h
DBG: added command 'ref' (to search for references to addresses/values/constants)
DBG: added simple (but useful) reference API (reference.cpp)
DBG: fixed a bug in valfromstring
GUI: added Follow address context menus to ReferenceView
GUI: added Follow in Dump to symbol view context menu
GUI: added '*' to settings that require a restart of the debuggee
