Convert to SQLite amalgamation.

Convert to SQLite amalgamation.

SQLite generally distributes using a script-generated "Giant file of
stuff", called the amalgamation.  It's apparently faster, due to more
opportunities for optimization, but for Chromium the attraction is
that we don't need as many patches to SQLite.  Imports of future
versions of SQLite should be simpler, so long as an Ubuntu box is
available.

BUG=71731
TEST=automated testing and watching closely.

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=81471

[Scott Hess - ex-Googler, 2011-04-13 19:50:52]

There is also amalgamation/sqlite3.c, which was too large to upload.  Which is
sad, I don't like it.  But I don't think it's reasonable to generate as part of
the build process.

I'm re-trying the failed tries, just because, but the failures didn't look
related to this change.

[brettw, 2011-04-13 20:09:53]

LGTM rubber stamp.