journald: use automatic cleanup
bootchart: Convert !strcmp usage to streq
bootchart: Convert malloc/memset to calloc
bootchart: fix a -Wshadow warning for "now"
build-sys: fix 'make distcheck' w/o sysvinit compat

EXTRA_DIST must unconditionally contain all source files.
build-sys: do not install to / in 'make distcheck'