fix NTH on streams
activity_logger style fixes
removed dup_ok
ptr_bag convention fixes
Added RQL driver syntactical sugar.
minor ptr_bag/env style fixes
style fixes
style fixes
made backtrace_t::frame_t constructor explicit
style fixes
style fixes
style fixes
pb_utils style fixes
be more careful with integers
style fixes
DISABLE_COPYING added
more style fixes
fixed backtrace regression
fixed bt tests
check_style.sh fixes