Fix a number of compiler/IDE warnings in IDE and kapt modules

idea/idea-analysis/src/org/jetbrains/kotlin/idea/configuration/BuildSystemType.kt

@@ -22,6 +22,7 @@ interface BuildSystemTypeDetector {
 }
 
 fun Module.getBuildSystemType(): BuildSystemType {
+    @Suppress("DEPRECATION")
     for (extension in Extensions.getExtensions(BuildSystemTypeDetector.EP_NAME)) {
         val result = extension.detectBuildSystemType(this)
         if (result != null) {

idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/AfterAnalysisHighlightingVisitor.kt

@@ -31,15 +31,18 @@ abstract class AfterAnalysisHighlightingVisitor protected constructor(
     holder: AnnotationHolder, protected var bindingContext: BindingContext
 ) : HighlightingVisitor(holder) {
 
-    protected fun attributeKeyForDeclarationFromExtensions(element: PsiElement, descriptor: DeclarationDescriptor) =
-        Extensions.getExtensions(HighlighterExtension.EP_NAME).firstNotNullResult { extension ->
+    protected fun attributeKeyForDeclarationFromExtensions(element: PsiElement, descriptor: DeclarationDescriptor): TextAttributesKey? {
+        @Suppress("DEPRECATION")
+        return Extensions.getExtensions(HighlighterExtension.EP_NAME).firstNotNullResult { extension ->
             extension.highlightDeclaration(element, descriptor)
         }
+    }
 
     protected fun attributeKeyForCallFromExtensions(
         expression: KtSimpleNameExpression,
         resolvedCall: ResolvedCall<out CallableDescriptor>
     ): TextAttributesKey? {
+        @Suppress("DEPRECATION")
         return Extensions.getExtensions(HighlighterExtension.EP_NAME).firstNotNullResult { extension ->
             extension.highlightCall(expression, resolvedCall)
         }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/FunctionsHighlightingVisitor.kt

@@ -77,7 +77,10 @@ internal class FunctionsHighlightingVisitor(holder: AnnotationHolder, bindingCon
     private fun highlightCall(callee: PsiElement, resolvedCall: ResolvedCall<out CallableDescriptor>) {
         val calleeDescriptor = resolvedCall.resultingDescriptor
 
-        val key = Extensions.getExtensions(HighlighterExtension.EP_NAME).firstNotNullResult { extension ->
+        @Suppress("DEPRECATION")
+        val extensions = Extensions.getExtensions(HighlighterExtension.EP_NAME)
+        
+        val key = extensions.firstNotNullResult { extension ->
             extension.highlightCall(callee, resolvedCall)
         } ?: when {
             calleeDescriptor.fqNameOrNull() == KOTLIN_SUSPEND_BUILT_IN_FUNCTION_FQ_NAME -> KEYWORD

idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/PropertiesHighlightingVisitor.kt

@@ -42,6 +42,7 @@ internal class PropertiesHighlightingVisitor(holder: AnnotationHolder, bindingCo
         val resolvedCall = expression.getResolvedCall(bindingContext)
 
         val attributesKey = resolvedCall?.let { call ->
+            @Suppress("DEPRECATION")
             Extensions.getExtensions(HighlighterExtension.EP_NAME).firstNotNullResult { extension ->
                 extension.highlightCall(expression, call)
             }

idea/idea-analysis/src/org/jetbrains/kotlin/idea/quickfix/QuickFixes.kt

@@ -29,6 +29,7 @@ class QuickFixes {
     private val actions: Multimap<DiagnosticFactory<*>, IntentionAction> = HashMultimap.create<DiagnosticFactory<*>, IntentionAction>()
 
     init {
+        @Suppress("DEPRECATION")
         Extensions.getExtensions(QuickFixContributor.EP_NAME).forEach { it.registerQuickFixes(this) }
     }