Intellij config: JDK setup: switch interpolation markers in dev-tools/idea/.idea/misc.xml to be well-formed (unlikely-to-be-used XML attribute 'subst.="idea.jdk"'), so that in-place users won't be yelled at by Intellij.  When IntelliJ starts up without this 'attribute' having been interpolated, it ignores and then removes the unknown XML attribute. (merged trunk r1524916)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1524917 13f79535-47bb-0310-9956-ffa450edef68