refs #1847 : add - basic travis CI support skeleton

.travis.yml

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+language: php
+php:
+  - '5.4'
+  - '5.5'
+  - '5.6'
+  - '7.0'
+  - hhvm
+env:
+  - DB=mysql
+  - DB=pgsql
+  - DB=sqlite
+matrix:
+  exclude:
+    - php: hhvm
+      env: DB=pgsql  # PDO driver for pgsql is unsupported by HHVM (3rd party install for support)
+  allow_failures:
+    - php: 7.0
+    - php: hhvm
+before_script:
+  - sudo apt-get update
+  - sudo apt-get install apache2 libapache2-mod-fastcgi
+  # enable php-fpm
+  - sudo cp ~/.phpenv/versions/$(phpenv version-name)/etc/php-fpm.conf.default ~/.phpenv/versions/$(phpenv version-name)/etc/php-fpm.conf
+  - sudo a2enmod rewrite actions fastcgi alias
+  - echo "cgi.fix_pathinfo = 1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - ~/.phpenv/versions/$(phpenv version-name)/sbin/php-fpm
+  # configure apache virtual hosts
+  - sudo cp -f build/travis-ci-apache /etc/apache2/sites-available/default
+  - sudo sed -e "s?%TRAVIS_BUILD_DIR%?$(pwd)?g" --in-place /etc/apache2/sites-available/default
+  - sudo service apache2 restart

build/travis-ci-apache

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+<VirtualHost *:80>
+  DocumentRoot %TRAVIS_BUILD_DIR%
+
+  <Directory "%TRAVIS_BUILD_DIR%">
+    Options FollowSymLinks MultiViews ExecCGI
+    AllowOverride All
+    Order deny,allow
+    Allow from all
+  </Directory>
+
+  # Wire up Apache to use Travis CI's php-fpm.
+  <IfModule mod_fastcgi.c>
+    AddHandler php5-fcgi .php
+    Action php5-fcgi /php5-fcgi
+    Alias /php5-fcgi /usr/lib/cgi-bin/php5-fcgi
+    FastCgiExternalServer /usr/lib/cgi-bin/php5-fcgi -host 127.0.0.1:9000 -pass-header Authorization
+  </IfModule>
+RewriteEngine on
+RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]
+</VirtualHost>