pidgin/pidgin

Fix an issue where we would get a warning about gplugin.pc not found while generating gir files

Testing Done:
built the gir's and made sure the warning was gone.

Reviewed at https://reviews.imfreedom.org/r/151/
i18n = import('i18n')
i18n.gettext('pidgin',
args : '--from-code=utf-8',
install : get_option('nls'),
)