pspell_new_config() opens up a
new dictionary with settings specified in a config, created
with with pspell_config_create() and modified
with pspell_config_*() functions.
This method provides you with the most flexibility and has
all the functionality provided by
pspell_new() and
pspell_new_personal().
The config parameter is the one returned by
pspell_config_create() when the config was
created.