Update AbuseFilter submodule to latest master

$ git lg 6caff9d822^...38bce17f2d
* 38bce17 - (HEAD, origin/master, origin/HEAD, master) Really parse the API warning in the APIEditBeforeSave hook (24 hours ago) <Marius Hoch>
* 9e22da2 - Localisation updates from http://translatewiki.net. (28 hours ago) <Translation updater bot>
* 88ac112 - Localisation updates from http://translatewiki.net. (2 days ago) <Translation updater bot>
*   a6b1dad - Merge "Avoid wgUser in AbuseFilterHooks edit handlers" (4 days ago) <jenkins-bot>
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| * 9062371 - Avoid wgUser in AbuseFilterHooks edit handlers (6 days ago) <Marius Hoch>
* | 9069bde - Localisation updates from http://translatewiki.net. (5 days ago) <Translation updater bot>
* | de8261a - Localisation updates from http://translatewiki.net. (6 days ago) <Translation updater bot>
* |   666db2e - Merge "Make global AbuseFilters searchable on Special:AbuseLog" (6 days ago) <jenkins-bot>
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| * | d2a3427 - Make global AbuseFilters searchable on Special:AbuseLog (6 days ago) <Marius Hoch>
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* |   4532d14 - Merge "Make the links in Special:AbuseLog plainlinks" (6 days ago) <jenkins-bot>
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| * | 433da00 - Make the links in Special:AbuseLog plainlinks (6 days ago) <Marius Hoch>
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* | 150bf28 - Don't create default object from empty value in AbuseFilterHooks (6 days ago) <Marius Hoch>
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* 2fcb9e5 - (bug 38371) Fixing SQL files for SQLite compatibility (6 days ago) <Dereckson>
* 0df9424 - Localisation updates from http://translatewiki.net. (7 days ago) <Translation updater bot>
* 6caff9d - Link correct Page in AbuseLog for users who can't see details (7 days ago) <Marius Hoch>

Change-Id: Ifeea7885d67af6e53bf5c19ccaa231f86c7ead90
Merge "Update AbuseFilter submodule to latest master" into wmf/1.22wmf9