Fix infinite recursion of memory probes handling

Fix infinite recursion of memory probes handling

Problem:
  During the processing of the realloc_handler () call,
  there is a recursive loop in the free_handler() call:
    -> plt@realloc() -> realloc_handler() -> lsan_get_sym() -> dlsym() ->
       plt@free() -> free_handler() -> lsan_get_sym() -> dlsym() ->
       plt@free() -> free_handler() -> lsan_get_sym() -> dlsym() ->
       plt@free() -> free_handler() -> lsan_get_sym() -> dlsym() ->
       ...

Solution:
  Find all LSan symbols during library initialization instead of lazy
  symbol search.

Change-Id: Idce7de857a468645be51c21386726ac2a37c1ade
Signed-off-by: Vyacheslav Cherkashin <v.cherkashin@samsung.com>