disable DNS lookups in tests

some first tests for the Mailer class

Note on enabling HTTPS/SSL support for php on windows

reenabled romanization test

The test can be skipped by excluding the "slow" group.

some cleanup

removed unneeded data files, converted tabs to spaces

changed README to dokuwiki format

added html_hilight test

This didn't really need runkit. The way runkit was used didn't add any
more credibility to the test result

only include dw files in coverage report except _ directories

use original conf directory and only shadow special files

https://github.com/splitbrain/dokuwiki/pull/96#issuecomment-5195756

phpunit 3.6.10 is sufficient

for consistency, also use _test directory for plugins

fixed content listing

moved _testing to _test

removed deprecated old test framework

fixed unittest and transformed to phpunit

fixed auth_aclcheck test

fixed some simpletest unit tests

transformed parser unit tests to phpunit

reenabled mail_quited_printable_encode test in simpletest

fixed mail_isvalid unittest in simpletest

fixed ixr_library_ixr_message testcase in simpletest

fixed ixr_library_date test in simpletest

fixed testcase class name

fixed pagetemplate unit test

added RPC_CALL_ADD event.

This event enables plugins to register custom method names.