Add support for getting SharedPreferences from PreferenceScreen.

Closes #1028.
Enhanced SQLite DROP TABLE test. Added ALTER TABLE test.

Closes #1036.
Add Matthew to pairs file
Add method to set Spinner selection based off text string.

Closes #1040.
Switch to using canonical paths in FileFsFile

Using canonical paths guarantees that when a library depends on two
other libraries, each of which depends on a fourth, the fourth’s
resources don’t get included twice.