[Android] Fix issue of make_apk does not work with Andorid SDK tools 23.

Android SDK tools 23 moves the 'zipalign' to $SDK_ROOT/build-tools, this
does not compatible with older SDK versions wich put 'zipalign' under
$SDK_ROOT/tools

Update the patch to make make_apk compatible with Android SDK tools 23.
Also refer to: https://codereview.chromium.org/238253015

BUG=https://crosswalk-project.org/jira/browse/XWALK-2033
Yes. My point is: do *not* use Python to call `find` (or equivalent).

On a broader level: does it make sense to fix this if, according to your post in JIRA, a new SDK will be releases in a few days?