list-local-devices improvements #1188

Job	Run time
build-and-dist (gcc)	55s
valgrind	34s
build-and-dist (gcc, -Db_sanitize=address,undefined -Db_lundef=false)	35s
build-and-dist (clang)	51s
build-and-dist (clang, -Db_sanitize=address,undefined -Db_lundef=false)	34s
duplicate-devices	25s
build-from-tarball	34s
clean-svg-check	28s
etcdir (sudo mv /usr/share/libwacom/wacom-intuos*.tablet /etc/libwacom)	22s
etcdir (sudo mv /usr/share/libwacom/*.tablet /etc/libwacom)	30s
etcdir (sudo mv /usr/share/libwacom/*.stylus /etc/libwacom)	23s
etcdir (sudo mv /usr/share/libwacom/*.tablet $HOME/.config/libwacom)	21s
etcdir (sudo mv /usr/share/libwacom/*.stylus $HOME/.config/libwacom)	22s
etcdir (sudo mv /usr/share/libwacom/wacom-*.tablet $HOME/.config/libwacom && sudo mv /usr/share/l...	31s
etcdir (sudo csplit data/wacom.stylus '/^\[0x822\]/' && sudo mv xx00 /etc/libwacom/first.stylus &...	29s
	7m 54s

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