Fix inline scripted

[allanrenucci]

With the introduction of transparent, an implicit conversion from Double
to Int kicked in. We change the type to String to prevent this

[allanrenucci]

@nicolasstucki Can you have a look. source-dependencies/value-class is failing with:

Tasty UUID (00000000-0000-0000-0000-0000049963e0) file did not correspond the tasty UUID declared in the classfile (00000000-0000-0000-0000-000003100f80).

[smarter]

Setting prio:blocker because this is preventing the nightly builds from being published.

[nicolasstucki]

source-dependencies/value-class/test can be minimized to

$ copy-file changes/A0.scala src/main/scala/A.scala
$ copy-file changes/B0.scala src/main/scala/B.scala
$ copy-file changes/C0.scala src/main/scala/C.scala

> compile

$ copy-file changes/A1.scala src/main/scala/A.scala

-> compile

$ copy-file changes/A0.scala src/main/scala/A.scala
$ copy-file changes/B1.scala src/main/scala/B.scala
$ copy-file changes/C1.scala src/main/scala/C.scala

> compile

The issue seems to be that in the third compile we try to load A from the classfile of the first compilation and the tasty of the second compilation. It looks like after the failure to compile in the second compile the classfile is reverted but the tasty file is kept.

@smarter where is the logic in that takes care of emitted classfiles?

[allanrenucci]

Scripted tests pass at http://dotty-ci.epfl.ch/lampepfl/dotty/6640

[allanrenucci]

I'll look into the newly failing test source-dependencies/restore-classes. But I think we can merge this to unblock nightly releases