kcms/region_lanuage: Also enable GLIBC when UBUNTU_LOCALE is set

e8eabb68 guarded glibc related code
behind GLIBC_LOCALE. It changed it so it is now defined if either
GLIBC_LOCALE_AUTO or GLIBC_LOCALE_GENERATED is defined. However
Ubtuntu also needs this code and did use it before. Without it
results in broken LANG variables.