mod_http_oauth2: Allow 'login_hint' as a substitute for OIDC 'select_account' prompt If the OIDC 'prompt' parameter does not contain the 'select_account' then it wants us to skip account selection, which means we have to figure which account to authenticate somehow. One way could be have this stored in a cookie from a previous successful login. Another way would be to have the account passed as a hint, which is what we add here.

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summary: Allow server administrators to probe any user
...

This module lets server administrators send `<presence type="probe"/>`
to any local user and receive their presence in response, bypassing
roster checks.

Compatibility
=============

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  trunk   Doesn't work (uses is_admin)
  0.12    Works?
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