updated for version 7.3.087

Problem:    EINTR is not always defined.
Solution:   Include errno.h in vim.h.

src/workshop.c

@@ -16,7 +16,6 @@
 #include <sys/types.h>
 #include <netdb.h>
 #include <netinet/in.h>
-#include <errno.h>
 #include <sys/socket.h>
 #ifdef HAVE_LIBGEN_H
 # include <libgen.h>