(cherry picked from commit 87b5592)

corrected paths to Kotlin stdlib: KOTLIN_BUNDLED path variable isn't defined in build scripts in this branch

(cherry picked from commit cfe67bed)

maven: updated internal JB maven mirror URL; as all http requests to http://maven.labs.intellij.net/repo get 200 OK even for absent artifacts
(cherry picked from commit 67402863)

when extracting root, remove leading slash for Windows in order to avoid java 9 incompatibilities [r=Eugene.Zhuravlev]

let in-process-groovyc have a parent loader of type GroovyClassLoader so that @Grab can work (https://devnet.jetbrains.com/message/5561141)
(cherry picked from commit cd2e101b)
(cherry picked from commit 29b49199)

remove usages of deprecated functions removed in Kotlin beta 2; add kotlinx.dom as a separate dependency

(cherry picked from commit e7d26bb1)
(cherry picked from commit c6fc148e)

Kotlin code cleanup: deprecated 'join' calls replaced by 'joinToString' ('join' function is already removed from latest Kotlin builds)
(cherry picked from commit f9be1666, IDEA-CR-6705)
(cherry picked from commit aeb367e7)

Enable ver.142 color schemes read in 141.x builds (Idea 14.1), fixes IDEA-146688 (Can't downgrade to 14.1: unsupported color scheme version 142) [CR-IC-7418]

access class sun.nio.ch.DirectBuffer in priveledged action, attempt to avoid (IDEA-146944 Internal error trying to build a java 9 project )

(cherry picked from commit 605b3c08)

Increase our indexed stamp with smaller increments to avoid the indexed time to be in the observable future (IDEA-146514)
(cherry picked from commit 820d5866) [r=Alexander.Zolotov]

(cherry picked from commit a635bc50)
(cherry picked from commit f1713089)

do not log exceptions that we are handling by rebuilding indices (the exception will be logged anyway) (EA-68516)