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This CL:
* Fixes some manpage syntax.
* Compresses the manpages.
* Adds manpage entries for google-chrome-stable and google-chrome for
  the stable channel.
* Fixes a reference to google-chrome in the RPM spec.
* Handles rpmlint suppressions using a conf file instead of just
  filtering out what we don't want.

This fixes the following lint errors:
* lintian:
  * E: chromium-browser-stable: manpage-not-compressed
    usr/share/man/man1/chromium-browser.1
  * W: chromium-browser-stable: manpage-has-errors-from-man
    usr/share/man/man1/chromium-browser.1 1: warning: macro `"' not
    defined
* rpmlint:
  * chromium-browser-stable.x86_64: W: manpage-not-compressed bz2
    /usr/share/man/man1/chromium-browser.1
  * chromium-browser-stable.x86_64: W: manual-page-warning
    /usr/share/man/man1/chromium-browser.1 1: warning: macro `"' not
    defined
  * chromium-browser-stable.x86_64: W: no-manual-page-for-binary
    google-chrome
  * chromium-browser-stable.x86_64: W: no-manual-page-for-binary
    chromium-browser-stable

BUG=771373
R=thestig@chromium.org

Change-Id: I5d1921150945123b72b5f2a50714c3094a526648
Reviewed-on: https://chromium-review.googlesource.com/699855Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506477}