* 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

blame jeff

r=dylan,a=glob

r=LpSolit a=sgreen

r=dkl a=sgreen

r=dylan, a=glob

Bug 870369: An error about longdescs.comment_id is thrown by MySQL 5.1 and older when upgrading to 4.4 if sql_auto_is_null = 1
r=wicked a=sgreen

r=simon, a=glob

Bug 852560: Bugzilla cannot be installed with MySQL 5.6, because the have_innodb variable no longer exists
r=glob a=LpSolit

r/a=LpSolit

r/a=LpSolit

r=runtests.pl

r=wicked 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

later.
r=dkl, a=mkanat

to get table information during checksetup, because it's much faster.
This also bumps our MySQL requirement to 5.0.15.
r=mkanat, a=mkanat (module owner)

r=mkanat

Bug 451735 part2: fix bz_drop_index() so that it first drops related FKs before deleting the index itself
r/a=mkanat

MS-SQL and SQLite support.

including the localconfig parameter descriptions
r=mkanat, a=mkanat (module owner)

populating FKs from _bz_schema at the end of checksetup, store REFERENCES
in _bz_real_schema with a special "created => 0" key that tells us that
we still need to create the FK.
r=mkanat, a=mkanat (module owner)

r=mkanat, a=mkanat (module owner)

r=mkanat, a=mkanat (module owner)

r=glob, a=mkanat

parameters as a hashref, to improve the API and to avoid exposing the
database password on error.
r=mkanat, a=mkanat (module owner)

r=mkanat, a=mkanat (module owner)

Bug 538705: Assure that Bugzilla->dbh doesn't become invalid under MySQL during long jobqueue.pl runs.
Patch by Max Kanat-Alexander <mkanat@bugzilla.org> r=LpSolit, a=mkanat

Patch by Gerard J. Cerchio <gjpc@circlesoft.com> r=mkanat, a=mkanat

r=mkanat, a=mkanat

Patch by Max Kanat-Alexander <mkanat@bugzilla.org> r=LpSolit, a=mkanat

The original patch for bug 508186 actually broke utf-8 conversion--the tables were converted, but the columns were not. This fixes it.

Patch by Max Kanat-Alexander <mkanat@bugzilla.org> (module owner) a=mkanat

Bug 508181: UTF-8 table conversion was failing when there were FKs on the column or on related columns
Patch by Max Kanat-Alexander <mkanat@bugzilla.org> r=LpSolit, a=mkanat

Patch by Max Kanat-Alexander <mkanat@bugzilla.org> (module owner) a=mkanat

Bug 480001: MySQL 5.1.31 throws an error when you try to SET SESSION max_allowed_packet (and previous versions of MySQL were just ignoring the SET SESSION), so just warn people if their max_allowed_packet is too small
Patch By Max Kanat-Alexander <mkanat@bugzilla.org> r=LpSolit, a=LpSolit

Patch By Max Kanat-Alexander <mkanat@bugzilla.org> and Mark Smith <mark@plogs.net> r=glob, a=mkanat

Patch By Max Kanat-Alexander <mkanat@bugzilla.org> (module owner) a=mkanat