Baby steps for incremental compilation.

Original commit: 5acd054c72

jps/jps-plugin/testData/incremental/independentClasses/Bar.kt

@@ -0,0 +1,2 @@
+package test
+class Bar

jps/jps-plugin/testData/incremental/independentClasses/Foo.kt

@@ -0,0 +1,2 @@
+package test
+class Foo

jps/jps-plugin/testData/incremental/independentClasses/Foo.kt.new

@@ -0,0 +1,2 @@
+package test
+class Foo

jps/jps-plugin/testData/incremental/independentClasses/build.log

@@ -0,0 +1,12 @@
+Cleaning output files:
+out/production/module/test/Foo.class
+End of files
+Compiling files:
+src/Foo.kt
+End of files
+Cleaning output files:
+out/production/module/test/Bar.class
+End of files
+Compiling files:
+src/Bar.kt
+End of files

jps/jps-plugin/testData/incremental/simpleClassDependency/Bar.kt

@@ -0,0 +1,2 @@
+package test
+class Bar

jps/jps-plugin/testData/incremental/simpleClassDependency/Foo.kt

@@ -0,0 +1,8 @@
+package test
+class Foo {
+    fun f() {
+        Bar()
+    }
+
+    class Boo
+}

jps/jps-plugin/testData/incremental/simpleClassDependency/Foo.kt.new

@@ -0,0 +1,8 @@
+package test
+class Foo {
+    fun f() {
+        Bar()
+    }
+
+    class Boo
+}

jps/jps-plugin/testData/incremental/simpleClassDependency/build.log

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+Cleaning output files:
+out/production/module/test/Foo$Boo.class
+out/production/module/test/Foo.class
+End of files
+Compiling files:
+src/Foo.kt
+End of files
+Cleaning output files:
+out/production/module/test/Bar.class
+End of files
+Compiling files:
+src/Bar.kt
+End of files