modphp: update to 5.5.12

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
phpmyadmin: update to 4.2.0

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
xdebug: update to 2.2.5

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
xdebug: add license file

Add the Xdebug license file to avoid a missing generic license file
warning during building.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>