Generate the documentation pages in the troff format

This commit introduces the `doc` target in the Makefile, which
generates man pages from the `asciidoc`-formatted documentation in the
`doc/manpages` directory.

Before being installed into the `$(sharedir)/doc` directory, the
generated raw man pages have to be striped of a few sections without
which `a2x` won't convert the `asciidoc` data: the shady block of shell
script in the `doc` target does just that, along with compressing the
resulting man page.

New dependency hereby introduced: `asciidoc`.

0 files changed, 0 insertions, 0 deletions