Easier minimization for SQLite LPM Fuzzer

Adds support for turning off specific queries with an environment
variable; makes it very easy to rule out a ton of irrelevant queries
in a very short amount of time when minimizing a test case.

R=metzman@chromium.org, pwnall@chromium.org

Bug: 909886
Change-Id: Ia785a8d89cad415f791fd28cd498244358437898
Reviewed-on: https://chromium-review.googlesource.com/c/1388035
Reviewed-by: Jonathan Metzman <metzman@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Commit-Queue: Matthew Denton <mpdenton@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#620992}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 55a46db4d17608aca41a7016557d5cea064ae126
7 files changed