Remove rendundant ../include from paths of files in include/ directory

Remove rendundant ../include from paths of files in include/ directory

Tiny bit of tidying I noticed while trying to figure out include rules.

In other words,
   cd core/include
   git grep 'include.*include'
   git grep 'include.*src'

Should produce no output, and

   cd fpdfsdk/include
   git grep 'include.*include' | grep -v ../core/include
   git grep 'include.*src'

Should produce no output as well.

Fix some IWYU, header guards, include ordering, whitespace along the way.

R=thestig@chromium.org

Committed: https://pdfium.googlesource.com/pdfium/+/14f57a153dcbc4c5fedeffe12a3b4f915cc5d558

[Tom Sepez, 2015-05-27 21:14:38]

tsepez@chromium.org changed reviewers:
+ thestig@chromium.org

[Tom Sepez, 2015-05-27 21:15:17]

Lei, quick tidying.

[Lei Zhang, 2015-05-27 23:00:33]

lgtm

[Tom Sepez, 2015-05-27 23:07:47]

Committed patchset #1 (id:1) manually as
14f57a153dcbc4c5fedeffe12a3b4f915cc5d558 (presubmit successful).