Take setlocale/gettext error handling pattern from tools/virsh-*
and use it for all standalone binaries via a new shared
virGettextInitialize routine. The virsh* pattern differed slightly
from other callers. All users now consistently:
* Ignore setlocale errors. virsh has done this forever, presumably for
good reason. This has been partially responsible for some bug reports:
https://bugzilla.redhat.com/show_bug.cgi?id=1312688https://bugzilla.redhat.com/show_bug.cgi?id=1026514https://bugzilla.redhat.com/show_bug.cgi?id=1016158
* Report the failed function name
* Report strerror
(cherry picked from commit e7db22781071a39668276a395fb547c0dd90875d)