Importing PHP 5.3.2

[Takahiro Kambe <taca%back-street.net@localhost>]

Hi,

I want to import PHP 5.3.2 as lang/php53.

* Adding "53" as "5.3.x" to acceptable version to PHP_VERSION_DEFAULT,
  PHP_VERSIONS_ACCEPTED, PHP_VERSION_REQD, ...

* To reduce changes, "5" remains to "5.2.x".

* PHP_PKG_PREFIX would be "php5" or "php53" to build binary pacakges
  for PHP 5.2.x and PHP 5.3.x.

* php5 and php53 couldn't be installed at the same time.

Any comments?

-- 
Takahiro Kambe <taca%back-street.net@localhost>