procdump2: fix many BSODs due to logical errors (#1778)

* procdump2: fix many BSODs due to logical errors

* procdump2: more fixes

* procdump2: refactor debug prints

* procdump2: refactor complex functions

* procdump2: refactor complex functions (v2)

* procdump2: refactor complex function dispatch_pending_pending

* procdump2: refactor complex dispatch_target_wakeup

* procdump2: refactor complex dispatch_active_lookup_process

* procdump2: refactor complex continues_task

* procdump2: refactor complex constructor

* procdump2: refactor complex stop_impl

* procdump2: refactor complex init_symbols

* refactor complex dispatch_pending_pending_on_timeout

* refactor complex clean_process_memory_cb

* refactor complex dispatch_active_copy_memory

* indent comments