Merge branch 'jk/make-simplify-dependencies'

Admit that keeping LIB_H up-to-date, only for those that do not use the automatically generated dependencies, is a losing battle, and make it conservative by making everything depend on anything. * jk/make-simplify-dependencies: Makefile: drop CHECK_HEADER_DEPENDENCIES code Makefile: use `find` to determine static header dependencies i18n: treat "make pot" as an explicitly-invoked target