multimedia fails to build against Qt (-no-multimedia) because it uses private header

multimedia fails to build against Qt (-no-multimedia) because it uses private header:

audio/qaudiodevicefactory.cpp:47:38: error: private/qfactoryloader_p.h: No such file or directory
audio/qaudiodevicefactory.cpp:73: error: 'QFactoryLoader' was not declared in this scope

Note: I'm using 1.0 branch from gitorious.