Enhance the isc_loop unit to allow reference count tracking
Use ISC_REFCOUNT_TRACE_{IMPL,DECL} to allow better isc_loop reference
tracking - use #define ISC_LOOP_TRACE 1
in <isc/loop.h> to enable.
Use ISC_REFCOUNT_TRACE_{IMPL,DECL} to allow better isc_loop reference
tracking - use #define ISC_LOOP_TRACE 1
in <isc/loop.h> to enable.