add $username to bp_core_get_user_domain filter

[sboisvert]

Good day,
I would like to suggest 2 separate patches for your consideration. The first simply adds $username to the bp_core_get_user_domain filter, while the other adds a filter that also has the extra username parameter just before the cache is set called bp_core_get_user_domain_pre_cache (There may be a preferred nomenclature that I am not familiar with regarding naming pre cache filters).

$username was picked over $user_id,$user_nicename or $user_login because it is guaranteed to be available while the others may not depending on how the function was called.

[sboisvert]

with filter before cache set

[boonebgorges]

We can pass along all the parameters to the filter; if the supplemental ones are not provided, they default to false. It's probably best to send the $user_id first, since that's the primary index for users (and will also always be available).

Also, for future patches - would you mind running the diff from the root of the buddypress installation? It makes for one less step for me when patching :)

[boonebgorges]

(In [5035]) Modify filters during bp_core_get_user_domain(). Fixes #3515. Props sboisvert