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.

tree-wide: add missing includes Add a few includes that we rely on to be include already.

remove unused includes This patch removes includes that are not used. The removals were found with include-what-you-use which checks if any of the symbols from a header is in use.

Add missing includes in header files This fixes various issues found by globally reordering the include sections of all .c files.

bus: rework bloom filter logic to operate with variable bloom filter sizes and numbers of hash functions In order to make the bloom filter logic more future proof communicate bloom filter parameters from the original bus creator to the clients, and allow them to be variable within certain ranges.

libsystemd: split up into subdirs We still only produce on .so, but let's keep the sources separate to make things a bit less messy.