Be able to build multi-arch android apk.

By building kiwix-android on the `android` platform, we can now build
`kiwix-lib` on all `android_<arch>` platforms, and so have all
architectures in the same apk.

Fix #108

kiwixbuild/dependencies/libmagic.py

@@ -22,7 +22,7 @@ class LibMagic(Dependency):
     class Builder(MakeBuilder):
 
         @classmethod
-        def get_dependencies(cls, platformInfo):
+        def get_dependencies(cls, platformInfo, allDeps):
             if platformInfo.build != 'native':
                 return [('native_static', 'libmagic')]
             return []