change shared libs build and install; separate llib_tar
so/Makefile.am
dependencies fix, demos
llib_tar: fixes+test (tar part)
llib_led: simplify_prefix strncmp fix
llib_tar: sha512 filter
llib_led: added file selector
llib_led: syntax from content guessing
llib_tar: fixes, test for memory source and long name
llib_tar: fixes + ltar demo
llib_match: added control chars and match_shell_start
llib_untar: filters finalizers checks with good value
llib_tar: filters stack fixes
move programs to src/programs and fix shared deps
llib_tar_filters: added ZPAQ filter
llib_tar_filters: added sha512 chaining