Bug#972563: android needs it

[Hans-Christoph Steiner]

When using the upstream build system, the Android Tools and SDK are 
built as one giant, statically linked source package.  The Debian 
Android Tools Team aims to use existing Debian packages whenever 
possible, instead of using upstream's all-in-one build system.  To 
achieve this, we link against what is available.  We happily use proper 
shared libraries when available.