Fix for build break when PRODUCT_BOOTANIMATION is unset

Change-Id: I236c2dd35ba0e632ed327ed6dc36324c9e59587a
envsetup: Use wait-for-online so these cmds work in recovery

Change-Id: I7a85e7068f373b1d726aa6b27a51862fa9b7c6fd
Restore original behavior when PRODUCT_BOOTANIMATION is undefined

Change-Id: I3ee7141f7c26cee033b8a30824caf38fcacec5a8
Merge branch 'cm-10.2' of https://github.com/CyanogenMod/android_build into DJL10.2