Fix build in trusty

With newer version of intltool its no posible to use IT_PROG_INTLTOOL and AM_GNU_GETTEXT together https://git.fedorahosted.org/cgit/libosinfo.git/commit/?id=0376f718e325a823154f5499e250462ff03a8e96
Merge pull request #43 from Manizuca/master

(Nemo-preview) Fix build in trusty and debian testing/unstable