Unbreak sbt.ScriptMain

[dwijnand]

The changes around JAVA_HOME and setting javaHome in #95 broke sbt.ScriptMain.

See #95 (comment)

[dwijnand]

I propose removing all the logic around setting javaHome as I've found http://www.jenv.be/ to be a better solution.

Among other things this would solve #99.

[dwijnand]

Here's an example scala script (using sbt.ScriptMain), after #142:

#!/usr/bin/env sbt -script

/***
scalaVersion := "2.11.8"
*/

println(scala.util.Properties.versionNumberString)

[dwijnand]

The above script doesn't work with current master, provided you have a JAVA_HOME set:

$ export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)
$ ./shout.scala
[info] Loading global plugins from /Users/dnw/.dotfiles/.sbt/0.13/plugins
java.io.FileNotFoundException: /s/warn (No such file or directory)
    at java.io.FileInputStream.open0(Native Method)

[paulp]

As a rule, shebang lines like

#!/usr/bin/env sbt -script

don't work. It makes the whole endeavor a giant pain. See some discussion at stackoverflow. You cannot rely on being able to pass more than one argument to env.

[dwijnand]

Oh wonderful..