move test classes into same package as the classes they test

This generally makes it easier to test the classes since the test classes
will have access to all methods/variables that are not declared private.
ignore all products of `android update` including proguard-project.txt
set sample minSdkVersion="11" to avoid using android-support-v4.jar
REBASE move SQLCipher helpers to separate library project
sort out android-support-v4.jar madness in Eclipse