apache2: update to 2.4.6

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
modphp: update to 5.5.2

* LIC_FILES_CHKSUM needed to change because the copyright year changed
* Enabled mcrypt since upstream recommend this for acceptable
  performance (and we now have a libmcrypt recipe in meta-oe)
* Disabled the opcache; this is a new feature in 5.5 and the configure
  check for it currently breaks when cross-compiling.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
phpmyadmin: update to 4.0.5

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
mysql5: replace with mariadb 5.1.67 and tweak

Switch to MariaDB (which is a drop-in replacement for MySQL) and use
the latest stable release from the 5.1 series.

* Update LIC_FILES_CHKSUM due to reformatted GPLv2 license text with
  updated FSF address
* Refresh patches
* Add two patches from the upstream 5.1 branch to fix CVE-2013-1861
* Add a package for libmysqld (the embedded server library)
* Disable "maria" plugin since this fails to compile and doesn't
  appear to be critical
* Drop some unrecognised/redundant options from EXTRA_OECONF
* Fix text relocation QA warnings introduced in the upgrade
* Convert to use useradd.bbclass for creating mysql user
* Set SUMMARY instead of description
* Move SRC_URI checksums to the version-specific inc file
* Clear out cruft in files/

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