Ignores a variety of warnings when compiling sqlite3.c.
Uses the new sqlite3_trace_v2() function for logging SQL statements, now
that sqlite3_trace() and sqlite3_profile() are deprecated.
Fixes a rhizomeops test failure caused because SQLite 3.12 increased the
default block size from 1024 to 4096, causing the fixed overhead of an
empty Rhizome db to exceed 32KB. This caused the test to fail because
the first "file add" failed. Now the test fixture adapts to the fixed
overhead.
Deletes the SQLite 3.10.2 source amalgamation.
