Change revision of platform/external/doclava and platform/external/proguard from master to refs/tags/android-4.4.4_r2

    The change of the revision for platform/external/doclava fixes the borken build:

    make: *** No rule to make target `/media/EvervolvData/Evervolv/out/host/common/obj/JAVA_LIBRARIES/tagsouplib_i
    needed by `/media/EvervolvData/Evervolv/out/host/common/obj/JAVA_LIBRARIES/doclava_intermediates/javalib.jar'.

Change-Id: Id3a3cf767a1ab875a0bc0e3d001c399116d5641d