harfbuzz: remove autogen

There is no documentation as to why this is necessary, it builds fine
for me without it, and MacPorts does not do it, so I'm removing it. It
can be added back with comments if it breaks for someone.
harfbuzz 0.9.14
libgcrypt 1.5.1
vim 7.3.875

Closes #18674.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gnutls 3.1.10

Closes #18667.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
auctex: fix type error

Fixes #18661.
Leiningen 2.1.1

Closes #18665.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
gnuplot 4.6.2