[release] version bump to 13.0 alpha10 as we start new merge window
ActiveAE: fix segfault caused by dangling gui sounds
ActiveAE: feed only first 512 samples of an audio buffer into viz
Merge pull request #3531 from FernetMenta/aefixes

ActiveAE fixes - Make Pike happy (viz, settings segfault)
CurlFile: no need for forward declaration if header is included
cximage: additional fix for 0e3d1663117cfc6b08081402cfc0104d306ff8ac
CSettingsManager: SettingsHandlers is std::vector now, because we need
to preserve the order the handlers where registered. Duplicates are
avoided in CSettingsManager::RegisterSettingsHandler. CSettings: Changed
the order ISettingsHandlers are registered.
Merge pull request #3500 from MartijnKaijser/november

[release] version bump to 13.0 alpha10 as we start new merge window
Merge pull request #3394 from groth-its/fix-pathsubstitution-rss

settings: load CAdvancedSettings first to fix CRssManager