Unroll 'make parse_command_line' const-correct patch, because it causes too

much troubles. Basically, consider;

    char* cmdline3_[1] = {};

    template<class charT>
    void func(const charT* const argv[]) {}

    int main()
    {
        func(cmdline3_);
        char** p = cmdline3_;
        func(p);
    }

EDG compilers can't deduce template argument in the first call. See
http://thread.gmane.org/gmane.comp.lib.boost.devel/125396 for details.
Some other compilers (borland, vc 7.0) see to be have this issue too.


[SVN r29615]

libs/program_options

@@ -1 +1 @@
-Subproject commit 5af27a78e73b4f55786b37dcaf263262c583af50
+Subproject commit a78a1f0d7652ab04fa63325d5e3c99b646147d77