Update ap2-suphp to 0.6.3.
While here, add DESTDIR support and more adapt sample config file to default settings.

* Version 0.6.3 (30 March 2008)
- Fixed a possible race condition concerning the check for the
  right symlink owner.
- Added checks for the owner of the parent directories were added.

* Version 0.6.2 (19 November 2006)
- Made mod_suphp compatible with Apache 2.2
- Modified SmartPtr implementation (hopefully) fixing
  double free problem
- Fixed problem that caused the process to block
  when more than 4096 were written to stderr
- Implemented userdir support
- Fixed problem with PATH_INFO and PHP scripts

* Version 0.6.1 (26 November 2005)
- Changed usage of STL to gain better compatibility with old GCC versions
  (credits to Jeremy Chadwick for finding the relevant code)
- Fixed typos in mod_suphp.c (Apache 1.3)
  (credits to Johan Ekenberg for finding these typos)
- Fixed potential buffer overflow in function suphp_bucket_read() in
  src/apache2/mod_suphp.c
- Fix problems with scripts sending "Last-Modified" headers
- Extended autoconf script to look for an installation of APR
  and to use its includedir when building mod_suphp for Apache 2
- Added support for chroot() call before execution of script

(obache)