[development] modify permissions using hook_menu_alter()

[Earnie Boyd]

Quoting Karoly Negyesi <karoly at negyesi.net>:

>> But the routing is built only when visiting some pages or after emptying the
>> cache.
>
> Wrong. No matter how much cache you clear, the menu_router table won't
> be rebuilt. This is why I stepped in: I do not want false information
> to be spread. Indeed specific admin pages trigger a menu rebuild and
> that's it.
>

So when is hook_menu called?  I use the devel module to ``Empty  
Cache'' to cause new items in my custom module to be generated on the  
menu.  The hook_menu isn't called until I ``Empty Cache''.  So it  
appears to from the DX perspective that emptying the cache rebuilds  
the menu.

--
Earnie
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