Update indentation with different indent settings

This was achieved by

	git ls-files -z \*.[ch] |
	xargs -0r indent -ut -ts4 -i4 -ci4 -cli4 -nbc -bbo -bbb -bap \
		-bad -bls -npcs -npsl -bl -bli0 -sob -cbi0 -l79 -lc79 \
		-hnl -nlp -ncdw -nss -saf -sai -saw -di1 -ss

as suggested by Timm S. Mueller.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>