version 8.1
build: update gnulib for Solaris utimens workaround
build: update gnulib submodule to latest
maint: remove local gnulib-related patches
build: update gnulib for Solaris 10 unsetenv work-around
doc: mention the du/fts vs. NFSv4 mount-point work-around
build: update from gnulib for (un)setenv fixes
build: update gnulib submodule to latest
true, false: perform initialization only when argc == 2
tail -F can fail to track a file after it's been rotated