Updated acinclude.m4 to fix warning "serial number must appear before any macro definition"
Updated acinclude.m4 to fix warning "serial number must appear before any macro definition"

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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403173

aduros/SDL_mixer,aduros/SDL_mixer,aduros/SDL_mixer