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.

shared: include what we use The next step of a general cleanup of our includes. This one mostly adds missing includes but there are a few removals as well.

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

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

util-lib: split out fd-related operations into fd-util.[ch] There are more than enough to deserve their own .c file, hence move them over.

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.

make gcc shut up If -flto is used then gcc will generate a lot more warnings than before, among them a number of use-without-initialization warnings. Most of them without are false positives, but let's make them go away, because it doesn't really matter.

acpi-fpdt: break on zero or negative length read https://bugzilla.redhat.com/show_bug.cgi?id=1027478

do not accept "garbage" from acpi firmware performance data (FPDT) 00000000 46 42 50 54 38 00 00 00 02 00 30 02 00 00 00 00 |FBPT8.....0.....| 00000010 23 45 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |#E..............| 00000020 f5 6a 51 00 00 00 00 00 00 00 00 00 00 00 00 00 |.jQ.............| 00000030 00 00 00 00 00 00 00 00 70 74 61 6c 58 00 00 00 |........ptalX...|

acpi: make sure we never free an uninitialized pointer

acpi-fptd: fix memory leak in acpi_get_boot_usec

support acpi firmware performance data (FPDT) Prefer firmware-provided performance data over loader-exported ones; if ACPI data is available, always use it, otherwise try to read the loader data. The firmware-provided variables start at the time the first EFI image is executed and end when the operating system exits the boot services; the (loader) time calculated in systemd-analyze increases.