Change SVNBIN into a portable path using /usr/bin/env svn

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Use git to checkout php source instead of svn

Since http://svn.php.net/repository/php/php-src/trunk doesn't host
php-src anymore, this change gets source from GitHub.

Signed-off-by: Rogerio Prado de Jesus <rogeriopradoj@gmail.com>
Merge pull request #6 from rogeriopradoj/fix-populate-sh

Fix populate sh - checkout php source using git instead of svn

* rogeriopradoj/fix-populate-sh:
  Use git to checkout php source instead of svn
  Change SVNBIN into a portable path using /usr/bin/env svn