* common/w32-misc.c [W32]: Include windows.h
(struct add_arg_s): New.
(add_arg): New.
(glob_arg): New.
(parse_cmdstring): Add arg argvflags and set it.
(w32_parse_commandline): Add arg r_itemsalloced.  Add globing.
* common/init.c (prepare_w32_commandline): Mark glob created items as
leaked.
* common/t-w32-cmdline.c : Include windows.h
(test_all): Add simple glob test for Unix.
(main): Add manual test mode for Windows.
* common/xasprintf.c (xtryreallocarray): New.