Revert "Switch inThisBuild (+friends) to use varargs SettingsDefinition"
Revert "Switch inThisBuild (+friends) to use varargs SettingsDefinition"

This reverts commit f459b218c47a330354111c884e4f204cd9067d02.

sbt/sbt,mdedetrich/sbt,mdedetrich/sbt,xuwei-k/xsbt,sbt/sbt,sbt/sbt,mdedetrich/sbt,mdedetrich/sbt,sbt/sbt,mdedetrich/sbt,xuwei-k/xsbt,sbt/sbt,xuwei-k/xsbt,mdedetrich/sbt,sbt/sbt,xuwei-k/xsbt,sbt/sbt,mdedetrich/sbt,xuwei-k/xsbt