pre-fixpak22 configuration (calling getpriority() on
non-existing process triggers a system-wide bug).
+
+ PrfDB was using a bug in processing XSUBs returning U32.
+
Variable $OS2::emx_rev implemented (string and numberic values
are the same as C variables _emx_rev and _emx_vprt).
Variable $OS2::emx_env implemented (same as C variable _emx_env).
it is incremented by the number of messages retrieved.
Dies with "QUITing..." if WM_QUIT message is obtained.
+after 5.005_54:
+ Opening pipes from/to processes could fail if (un)appropriate
+ combination of STDIN/STDOUT was closed.
+
+ If the only shell-metachars of a command are ' 2>&1' at the
+ end of a command, it is executed without calling the external shell.