Support for appending "standalone" WHERE chunks.

The existing appendWhere() methods aren't very friendly for
developers, since they require manual tracking of state to decide if
subsequent standalone chunks should be prefixed with "AND".

While it's tempting to offer direct argument binding on the builder
class, we can't really deliver on that API in a secure way, so instead
add separate bindSelection() method which explicitly burns arguments
into a standalone selection string, which can then be appended to
the builder.

This was the last piece of new functionality being used by
SQLiteStatementBuilder, so we can delete that class and migrate
users back to SQLiteQueryBuilder.

Bug: 111268862
Test: atest frameworks/base/core/tests/coretests/src/android/database/DatabaseUtilsTest.java
Test: atest frameworks/base/core/tests/utiltests/src/com/android/internal/util/ArrayUtilsTest.java
Test: atest cts/tests/tests/provider/src/android/provider/cts/MediaStore*
Test: atest cts/tests/tests/database/src/android/database/sqlite/cts/SQLiteQueryBuilderTest.java
Merged-In: I418f24338c90bae8a9dad473fa76329cea00a8c5
Change-Id: I418f24338c90bae8a9dad473fa76329cea00a8c5