- stop using dlinfo() on glibc platforms but use dl_iterate_phdr() instead, as former's implementation is nothing more than a fancy cast and thus dangerously assuming that every provided handle is valid - dynload_plain test * now testing getting exec's path * workdir independent

set(DYNCALLBACK_INCLUDE_DIRS ${DynCall_SOURCE_DIR}/dyncallback)
set(DYNCALLBACK_LIBRARIES dyncallback_s)