external-system: project import fixed to use correct fileToImport
(cherry picked from commit dfc2ef7)
Gradle: gradle distribution pattern updated
(cherry picked from commit 814378f)
Gradle: update Tooling API version up to 1.12-rc-1
(cherry picked from commit 5c594f6)
Gradle: update Tooling API version up to 1.12-rc-1
(cherry picked from commit eb12ccd)
Gradle: installer build fix
(cherry picked from commit 9df7136)
Gradle: update Tooling API version up to 1.12-rc-1, fix classpath for out-of-process mode
(cherry picked from commit 6de52dc)
External system: source package prefix support added; fix for out-of-process mode support
(cherry picked from commit 09333b1)
IDEA-118062 Gradle Run Configuration: 'working directory' is set incorrectly
(cherry picked from commit 6924cc4)
Gradle: update Tooling API version up to 1.12-rc-1
Gradle: tests code cleanup