Rust 0.7

Closes #20997.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
wgetpaste 2.22

Closes #21007.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libslax 0.16.6

Closes #20964.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
GroovyServ 0.12

Closes #21006.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
lilypond: vendor an older texinfo

Due to an acknowledged LilyPond bug, the latest version of Texinfo (5.1)
breaks compilation with the --with-doc option. As a workaround, we now install
the older Texinfo 4.13a using a sub-formula.

Closes #20998.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
libgcrypt fails with very old clang
discount: drop the v from the version
Add audit for leading 'v' in version numbers