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.

basic: re-sort includes My previous patch to only include what we use accidentially placed the added inlcudes in non-sorted order.

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

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

prioq: never shuffle identical entries Skip shuffling identical entries in shuffle_up(), just like we already do in shuffle_down().

prioq: add introduction comment Add comment to prioq.c explaining what it does. And more importantly, mention that we implement a Heap. It's more than annoying having to figure out what the code actually does, without ever mentioning the word 'heap'.

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/