tree-wide: remove Emacs lines from all files This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.

utf8.[ch] et al: use char32_t and char16_t instead of int, int32_t, int16_t rework C11 utf8.[ch] to use char32_t instead of uint32_t when referring to unicode chars, to make things more expressive. [ @zonque: * rebased to current master * use AC_CHECK_DECLS to detect availibility of char{16,32}_t * make utf8_encoded_to_unichar() return int ]

basic: include only what we use This is a cleaned up result of running iwyu but without forward declarations on src/basic.

tree-wide: sort includes Sort the includes accoding to the new coding style.

Revert "utf8.[ch]: use char32_t and char16_t instead of int, int32_t, int16_t"

utf8.[ch]: use char32_t and char16_t instead of int, int32_t, int16_t rework C11 utf8.[ch] to use char32_t instead of uint32_t when referring to unicode chars, to make things more expressive.

util-lib: split out allocation calls into alloc-util.[ch]

util-lib: split out hex/dec/oct encoding/decoding into its own file

build-sys: split internal basic/ library from shared/ basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/