* use base to make merging with bmo easier

* Revert "Bug 1497042 - Enclose table names in CREATE queries"

This reverts commit 62d5637a.

* refactor Bugzilla::DB to not subclass DBI

* use DBIx::Connector to manage database connections

* Ensure we always call DBIx::Connector->dbh before any DBI method

The code didn't allow a way of doing this without a lot of work.

So I had to take the following approach:
The 'dbh' attribute is now a method that delegates to DBIx::Connector's dbh
method. Per the docs, ->dbh() "Returns the connection's database handle. It will
use a an existing handle if there is one, if the process has not been forked or
a new thread spawned, and if the database is pingable. Otherwise, it will
instantiate, cache, and return a new handle."

Then there is the matter of the 'handles' on dbh. I've used Package::Stash to
insert proxy methods into the class when it is loaded.

* Bug 1328659 - Add support for utf8=utf8mb4 (switches to dynamic/compressed row format, and changes charset to utf8mb4)

* add deps

* add prepare_cached to the list of delegated methods.

This was added in bug 340160

* improve the migration to compressed/dynamic rows, skip views

* add missing semicolon

* remove pre-utf8mb4 emoji support

* fix small issue

* add debugging fatal error

r=dkl a=sgreen

r/a=LpSolit

r=wicked a=LpSolit

r/a=LpSolit

Bug 680131: Replace the MPL 1.1 license by the MPL 2.0 one in all files, and add it to files which miss one
r=kiko r=mkanat r=mrbball a=LpSolit

r=mkanat, a=mkanat

During the CVS imports into Bzr, there were some inconsistencies introduced
(mostly that files that were deleted in CVS weren't being deleted in Bzr).
So this checkin makes the bzr repo actually consistent with the CVS repo,
including fixing permissions of files.

Bug 182238: Allow users to choose what time zone to display times in - Patch by FrÃdÃric Buclin <LpSolit@gmail.com> r/a=mkanat

Patch by Marc Schumann <wurblzap@gmail.com>;
r=LpSolit; a=LpSolit

Patch by Marc Schumann <wurblzap@gmail.com>,
r=glob,LpSolit; a=LpSolit

Bug 387678: Warnings thrown when running ./runtests -v 11 - Patch by FrÃdÃric Buclin <LpSolit@gmail.com> r=dkl a=LpSolit

Bug 376908: Installation process should not assume skins are in the same directory as checksetup.pl - Patch by guillomovitch@zarb.org r/a=mkanat

Patch by Marc Schumann <wurblzap@gmail.com>;
r=myk,mkanat; a=myk