[PATCH] src/main/http_main.c fix for SHARD_CORE case

[Martin Kraemer <ma...@mch.sni.de>]

If apache is compiled as SHARED_CORE (as required on some older SVR4
variants), then the compilation of http_main.c fails for the current
version because the (in the case of the "real" main) global variable
ap_server_argv0 is not defined anywhere when
the -DSHARED_CORE_BOOTSTRAP define is set.

The following patch does not try to strip the directory part off the
path. It just replaces the undefined (and otherwise unreferenced)
variable ap_server_argv0 by the value of argv[0]. Given the nature
of the error message, I think more than that is just overkill.

    Martin
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