sqlite: strip trailing space and CR from src/ and patches.

Getting the whitespace removed will make SQLite patch management easier.

This CL was generated using the following commands.
cd third_party/sqlite
find src/ -type f -not -iname "*.db" -not -iname "*.eps" -not -iname "*.ico" \
    -not -iname "*.jpg" -not -iname "*.pfx" -not -iname "*.tiff" \
    -not -iname "*.vsix" -exec sed --in-place 's/[[:space:]]\+$//' {} \+
find patches/ -type f -exec sed --in-place 's/[[:space:]]\+$//' {} \+
./google_generate_amalgamation.sh

Bug: 746653
Change-Id: I933ab436d5a1be05074821d92e818dd6bf72009f
Reviewed-on: https://chromium-review.googlesource.com/578677


Reviewed-by: Joshua Bell <jsbell@chromium.org>
Commit-Queue: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488326}