Extensions PsiElement.getParentOfType with reified T

1. Renamed *ByType -> *OfType (as in PsiTreeUtil.java)
2. Introduced PsiElement.getStrictParentOfType and PsiElement.getNonStrictParentOfType
with reified TP
3. Replaced current usages of PsiTreeUtil.getParentOfType and current
extensions
4. Made reified version of PsiElement.getParentOfTypeAndBranch with
default strict value --- false (as it used)

idea/tests/org/jetbrains/jet/completion/DataFlowValueRenderingTest.kt

@@ -19,7 +19,6 @@ package org.jetbrains.jet.completion
 import org.jetbrains.jet.plugin.PluginTestCaseBase
 import org.jetbrains.jet.lang.psi.JetFile
 import org.jetbrains.jet.lang.psi.JetExpression
-import com.intellij.psi.util.PsiTreeUtil
 import org.jetbrains.jet.plugin.completion.renderDataFlowValue
 import org.jetbrains.jet.JetTestUtils
 import com.intellij.openapi.util.io.FileUtil
@@ -29,6 +28,7 @@ import com.intellij.testFramework.LightProjectDescriptor
 import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase
 import org.jetbrains.jet.lang.resolve.bindingContextUtil.getDataFlowInfo
 import org.jetbrains.jet.plugin.caches.resolve.analyze
+import org.jetbrains.jet.lang.psi.psiUtil.getStrictParentOfType
 
 public abstract class AbstractDataFlowValueRenderingTest: JetLightCodeInsightFixtureTestCase() {
     override fun getTestDataPath() : String {
@@ -45,7 +45,7 @@ public abstract class AbstractDataFlowValueRenderingTest: JetLightCodeInsightFix
 
         val jetFile = fixture.getFile() as JetFile
         val element = jetFile.findElementAt(fixture.getCaretOffset())
-        val expression = PsiTreeUtil.getParentOfType(element, javaClass<JetExpression>())!!
+        val expression = element.getStrictParentOfType<JetExpression>()!!
         val info = expression.analyze().getDataFlowInfo(expression)
 
         val allValues = (info.getCompleteTypeInfo().keySet() + info.getCompleteNullabilityInfo().keySet()).toSet()