Add definitions for 5.3.20 and 5.4.11.
Add definition 5.3.21 - #102

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Add definition 5.4.11 - #102

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Update STABLE_DEFINITIONS with 5.3.21 and 5.4.11 - #102

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Update travis.yml to run 5.3.21 and 5.4.1 - #102

Fix #102: Update definitions: PHP 5.4.11 and 5.3.21

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Merge pull request #103 from loicfrering/master

Add definitions for 5.3.20 and 5.4.11
Merge branch 'fix-102' of https://github.com/rogeriopradoj/php-build into rogeriopradoj-fix-102

Conflicts:
	share/php-build/definitions/5.3.21
	share/php-build/definitions/5.4.11
Merge branch 'rogeriopradoj-fix-102'
Add 5.5.0alpha4
Add PHP_BUILD_ZTS_ENABLE environment variable to enable ZTS