Update module-info exports for stdlib and suppress warnings

- include kotlin.time package

Suppress module-info warnings:

- terminal digits in module name
- open/export for another not yet built dependee module

#KT-21266

libraries/stdlib/jdk7/java9/module-info.java

@@ -1,3 +1,4 @@
+@SuppressWarnings("module") // suppress warnings about terminal digit and exporting packages to not-yet-built kotlin-stdlib-jdk8
 module kotlin.stdlib.jdk7 {
     requires transitive kotlin.stdlib;