[n8gray] Added cross_session readline history support. Use environment variables_Tue Sep 13 03:45:41 PDT 2005
http://svn.metaprl.org/commitlogs/libmojave/2003-11/2005-09-13-03-45-41-349506000-PDT.html
http://svn.metaprl.org/commitlogs/libmojave/2003-11/2005-09-13-03-45-41-349506000-PDT.html[nogin] _ Do not print a warning message in the Readline history file does not exist._Tue Sep 13 03:45:43 PDT 2005
http://svn.metaprl.org/commitlogs/libmojave/2003-11/2005-09-13-03-45-43-474469000-PDT.html
http://svn.metaprl.org/commitlogs/libmojave/2003-11/2005-09-13-03-45-43-474469000-PDT.html