Move multi-module IC tests to separate dir

At the moment they are used only with JPS

jps-plugin/testData/incremental/multiModule/simple/build.log

@@ -0,0 +1,62 @@
+================ Step #1 =================
+
+Building module1
+Cleaning output files:
+  out/production/module1/foo/A.class
+End of files
+Compiling files:
+  module1/src/A.kt
+End of files
+Marked as dirty by Kotlin:
+  module2/src/AChild.kt
+  module2/src/importA.kt
+  module3/src/importAChild.kt
+Exit code: ADDITIONAL_PASS_REQUIRED
+------------------------------------------
+Exit code: NOTHING_DONE
+------------------------------------------
+Building module2
+Cleaning output files:
+  out/production/module2/foo/AChild.class
+End of files
+Compiling files:
+  module2/src/AChild.kt
+  module2/src/importA.kt
+End of files
+Exit code: ABORT
+------------------------------------------
+COMPILATION FAILED
+Cannot access 'A': it is private in file
+'public' subclass exposes its 'private' supertype A
+Cannot access 'A': it is private in file
+
+================ Step #2 =================
+
+Building module1
+Cleaning output files:
+  out/production/module1/foo/A.class
+End of files
+Compiling files:
+  module1/src/A.kt
+End of files
+Marked as dirty by Kotlin:
+  module2/src/AChild.kt
+  module2/src/importA.kt
+  module3/src/importAChild.kt
+Exit code: ADDITIONAL_PASS_REQUIRED
+------------------------------------------
+Exit code: NOTHING_DONE
+------------------------------------------
+Building module2
+Compiling files:
+  module2/src/AChild.kt
+  module2/src/importA.kt
+End of files
+Exit code: OK
+------------------------------------------
+Building module3
+Compiling files:
+  module3/src/importAChild.kt
+End of files
+Exit code: OK
+------------------------------------------

jps-plugin/testData/incremental/multiModule/simple/dependencies.txt

@@ -0,0 +1,3 @@
+module1->
+module2->module1
+module3->module2

jps-plugin/testData/incremental/multiModule/simple/module1_A.kt

@@ -0,0 +1,5 @@
+package foo
+
+open class A {
+    open fun f() {}
+}

jps-plugin/testData/incremental/multiModule/simple/module1_A.kt.new.1

@@ -0,0 +1,5 @@
+package foo
+
+private open class A {
+    open fun f() {}
+}

jps-plugin/testData/incremental/multiModule/simple/module1_A.kt.new.2

@@ -0,0 +1,5 @@
+package foo
+
+open class A {
+    open fun f() {}
+}

jps-plugin/testData/incremental/multiModule/simple/module2_AChild.kt

@@ -0,0 +1,3 @@
+package foo
+
+open class AChild : A()

jps-plugin/testData/incremental/multiModule/simple/module2_importA.kt

@@ -0,0 +1,3 @@
+package bar
+
+import foo.A

jps-plugin/testData/incremental/multiModule/simple/module3_importAChild.kt

@@ -0,0 +1,3 @@
+package bar
+
+import foo.AChild