* src/rtl/hbproces.c
! fixed infinite loop due to ignored POLLHUP errors reported by poll()
! fixed stupid typo
* src/rtl/hbproces.c
* src/rtl/hbsocket.c
* src/rtl/filesys.c
* src/rtl/hbcom.c
* emulate read access when poll() used instead of select() reports
POLLHUP - this poll() behavior is neither consistent within a
single implementation, nor between different versions of the same
implementation, and certainly not across platforms
% optimize read/write access using extended (in comparison to select())
information reported by poll()
; TODO: emulate select() behavior for high priority data.