gnutls: Depends on autogen for Linuxbrew (#1530)
gnutls: Depends on autogen for Linuxbrew (#1530)

Depends on autogen for libopts.so.

Fixes `ld: cannot find -lopts` error

Signed-off-by: Maxim Belkin <032baa6ccf1d4eaa4536fc4f9b83b9a1f593449a@gmail.com>
maxim-belkin/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,Linuxbrew/homebrew-core,maxim-belkin/homebrew-core,LinuxbrewTestBot/homebrew-core,rwhogg/homebrew-core,rwhogg/homebrew-core