[OPENMP50]Initial support for inclusive clause.

Added parsing/sema/serialization support for inclusive clause in scan
directive.
diff --git a/clang/lib/Serialization/ASTWriter.cpp b/clang/lib/Serialization/ASTWriter.cpp
index c96e465..c95cabc 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -6593,6 +6593,13 @@
     Record.AddStmt(E);
 }
 
+void OMPClauseWriter::VisitOMPInclusiveClause(OMPInclusiveClause *C) {
+  Record.push_back(C->varlist_size());
+  Record.AddSourceLocation(C->getLParenLoc());
+  for (auto *VE : C->varlists())
+    Record.AddStmt(VE);
+}
+
 void OMPClauseWriter::VisitOMPOrderClause(OMPOrderClause *C) {
   Record.writeEnum(C->getKind());
   Record.AddSourceLocation(C->getLParenLoc());