Fix JVM_DEBUG in sbt.bat
Fix JVM_DEBUG in sbt.bat

JVM_DEBUG was broken due to a copy-pasta error in sbt.bat. This
commit corrects the value assignment to the variable and therefore
fixes the problem.

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