after 5.004_64:
Make DLL names different if thread-enabled.
Emit more informative internal DLL descriptions.
+
+5.004_72:
+ Updated OS2::Process (v0.2) included.
+
+after 5.004_73:
+ Fixed a bug with argv not NULL-terminated when starting scripts.
+ Support all the forms of starting scripts.
+ Support killing a child when receiving a signal during system()
+ (in two stage, on first send the same signal, on the next
+ send SIGKILL).
+ Add the same logic for scripts as in pdksh, including
+ stripping the path from #! line if needed,
+ calling EXECSHELL or COMSPEC for magic-less scripts;
+ Now pdksh is called only if one-arg system()/friends contains
+ metachars, or if magic-line asks for sh, or there is no magic
+ line and EXECSHELL is set to sh.
+ Shell is supplied the original command line if possible.