mysql: use install_symlink
percona-server: use install_symlink
ldns: add 1.6.17 bottle.
unbound: add 1.4.21 bottle.
getdns 0.1.1
getdns: add 0.1.1 bottle.

Closes #27855.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
terminal-notifier 1.6.0
terminal-notifier: add 1.6.0 bottle.

Closes #27857.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
fossil 1.28
fossil: add 1.28 bottle.

Closes #27858.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
android-ndk: use install_symlink
google-app-engine: use install_symlink
libspotify: use install_symlink
macvim: use install_symlink
passenger: use install_symlink
sslh: use install_symlink
tofrodos: use install_symlink
voltdb: use install_symlink
xmlstarlet: use install_symlink
doctor: use double quotes for setting PATH.

Closes #27619.