[ticket/10854] sql server drop default constraint when dropping column

drops default columns with T-SQL before attempting drop column to
avoids sql exception.  This is a huge annoyance in UMIL scripts running
under sql server.
[ticket/11295] Drop tables rather than database for postgres in test suite.

Doing so allows:

1. User running the tests no longer needs create database privilege.
2. Test database may be located in a non-default tablespace and generally
have site-specific options applied to it.

PHPBB3-11295
[ticket/11324] Add PHP 5.5 environment to travis and allow it to fail.

PHPBB3-11324
Merge PR #1191 branch 'bantu/ticket/11324' into develop-olympus

# By Andreas Fischer
# Via Andreas Fischer
* bantu/ticket/11324:
  [ticket/11324] Add PHP 5.5 environment to travis and allow it to fail.
[ticket/11323] Backport include_define test to olympus.

PHPBB3-11323
[ticket/11323] Add tests for inclusion of defined variables

This adds 2 tests for the template engine. The test using
include_define_variable.html will test if a defined variable, which was
defined with another template variable, can be used to include a file.
The second test will do the same inside a loop using a loop variable.

PHPBB3-11323
Merge PR #1194 branch 'marc1706/ticket/11323' into develop-olympus

# By Marc Alexander
# Via Marc Alexander
* marc1706/ticket/11323:
  [ticket/11323] Add tests for inclusion of defined variables
Merge remote-tracking branch 'remotes/Sajaki/ticket/10854' into develop-olympus

# By Sajaki
# Via Sajaki
* remotes/Sajaki/ticket/10854:
  [ticket/10854] sql server drop default constraint when dropping column
Merge remote-tracking branch 'p/ticket/11323-olympus' into develop-olympus

* p/ticket/11323-olympus:
  [ticket/11323] Backport include_define test to olympus.
Merge remote-tracking branch 'p/ticket/11295' into develop-olympus

* p/ticket/11295:
  [ticket/11295] Drop tables rather than database for postgres in test suite.
[ticket/11337] Run functional tests on travis using nginx and php-fpm.

PHPBB3-11337
[ticket/11337] php-fpm.conf is no longer owned by root.

PHPBB3-11337
[ticket/11337] Silence nginx config file writing.

PHPBB3-11337
[ticket/11337] Only run functional tests on 5.3.19 or higher. No FPM otherwise.

There is no php-fpm for PHP 5.3.3. Make sure PHP version is at least 5.3.19,
which is what 5.3 is currently aliased to.

PHPBB3-11337
[ticket/11337] Abort setup-webserver.sh script when an error occurs.

PHPBB3-11337
Merge PR #1201 branch 'bantu/ticket/11337' into develop-olympus

# By Andreas Fischer
# Via Andreas Fischer
* bantu/ticket/11337:
  [ticket/11337] Abort setup-webserver.sh script when an error occurs.
  [ticket/11337] Only run functional tests on 5.3.19 or higher. No FPM otherwise.
  [ticket/11337] Silence nginx config file writing.
  [ticket/11337] php-fpm.conf is no longer owned by root.
  [ticket/11337] Run functional tests on travis using nginx and php-fpm.