* honor BINDIR, INSTALL_MAN, MANDIR, and PREFIX during configure and install
* remove -v option, your package manager of choice can already provide the same
information
* remove -h option in favor of the manual
* do not output options as part of the usage output, in favor of the manual
instead.
* mark unused variables in compat files as extern in order to compile using
GCC 10
The pick utility allows users to select from a set of choices using an interface
with fuzzy search functionality. The choices are read from stdin, and the
selected choice written to stdout.