last: merge sysvinit last/lastb

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
last: clean up the begin of the file

 .. and improve last(1) stuff in configure script.

Signed-off-by: Karel Zak <kzak@redhat.com>
build-sys: improbe UL_CONFLICT_BUILD macro

Signed-off-by: Karel Zak <kzak@redhat.com>
build-sys: fix last stuff

Signed-off-by: Karel Zak <kzak@redhat.com>
last: add long options, improve usage()

Signed-off-by: Karel Zak <kzak@redhat.com>
last: consolidate btmp/wtmp file paths

 .. so share the paths with another utils.

Signed-off-by: Karel Zak <kzak@redhat.com>
last: use xalloc.h, err.h, nls.h and EXIT_ macros

Signed-off-by: Karel Zak <kzak@redhat.com>
last: coding style clean up

Signed-off-by: Karel Zak <kzak@redhat.com>
last: add link to util-linux to last.1

Signed-off-by: Karel Zak <kzak@redhat.com>