Use correct arguments to the .TH command.

Autopoint needs that macro when re-generating the build system
from scratch.

Bump version number, update NEWS file.

Add configure options --with-{zxcvbn-c,zxcvbn-cpp,pwquality} to
explicitly enable or disable estimator backends. Default behavior
is to automatically enable the backend if it is found available.

Make sure USERDICT_OPT is always defined, even as an empty
string (if the only estimator backend available is pwquality).

Man page, help message and getopt_long argument all say the
short option to disable the internal dictionary is '-D', but
the switch code was looking for '-i'. Doh.

Make sure the generated file src/dictint.h is not listed as a
source file to be distributed (this prevent building a release
tarball when conigure was called without --with-dict).

Bump version number and update documentation with the recent
changes.

Allow the user to disable the embedded dictionary.

Allow the builder to specify the embedded dictionary at
configure time.

Allow to embed a dictionary directly into the binary.

Useless on all modern systems (which automatically reclaim all
memory when the program terminates), I know, but I like to clean
up my mess.

If the only available backend is libpwquality, then do not bother
displaying and accepting the -d, --dict option as that backend
does not support using a user-supplied dictionary.

Allow the user to specify her own dictionary to check the
password against.

This is not usable with the libpwquality backend.

If no backend is found on the target system, list the supported
libraries in the configure error message.

Add README file and basic man page.

Add an option to get the list of available estimators.

Describe all backends in an array and loop through that array
when necessary. Also, replace all backend-specific options
(-z, -Z, -p) with a single -e option.

This drastically reduces the number of #if blocks and makes
the code easier to read.

Add some padding to align all time estimations on the same
column.

Labels for throttled and unthrottled online attacks were
mixed up.

Keep working with double to represent the number of seconds.

Do not mix the printing code in the functions that perform the
password strength estimation. Store results into a ad-hoc structure
and use a single dedicated function to print them.

List available backend options in the help message.

If scorepw is called without non-option argument, read the
password to evaluate from standard input.

Reading is truncated to 200 characters max (which should be
enough for any password).

Re-organize the previous patch to regroup the definitions of all
backend selection options near the beginning of the file.

If we have only one backend available, there is no point in
accepting any of the backend selection options.

Implement basic functionnality for all three backends.

Add Autoconf code to automatically detect the three password
strength estimation libraries that we plan to support (zxcvbn,
zxcvbn-cpp, and pwquality).

This is scorepw, a command-line tool to score passwords.