Forward port (or not) changes in wip/old-1.0

[dwijnand]

We have a number of changes on the https://github.com/sbt/sbt/compare/wip/old-1.0 branch.

We should decide whether we want to keep the change or not for 1.0:

• proc interpolator + ProcessBuilder.lines workaround. Fixes #819 #913 proc interpolator + ProcessBuilder.lines workaround. Fixes ProcessBuilder.lines conflicts with StringOps.lines #819
• Add option preserveExecutable to IO.copyFile and IO.copyDirectory #944 Add option preserveExecutable to IO.copyFile and IO.copyDirectory
• Handle source, docs artifacts correctly for Ivy #1016 Handle source, docs artifacts correctly for Ivy
• IncludeRule / ExcludeRule aliases for InclExclRule #1140 IncludeRule / ExcludeRule aliases for InclExclRule

[kzys]

On #944, shouldn't be the default behavior? As a Unix user, I can't imagine the use case where I want to ignore the executable bit.

[dwijnand]

Process has been removed in sbt in favour of scala.sys.process.

The preserveExecutable changes is forward-ported in sbt/io#53

The ivy changes were forward-ported to sbt 1.

The aliases are already present in sbt 1.0.x.