JDK 9 RFR of doclint updates to cover langtools API

[joe darcy]

Hello,

As a follow-up to the recent work to add doclint flags to the build of 
various modules, please review the additional patch below to add such 
coverage to the API defined in the langtools repo.

(The change to java.desktop deletes a trailing space character.)

Thanks,

-Joe

diff -r ac80b5d194b1 make/CompileJavaModules.gmk
--- a/make/CompileJavaModules.gmk    Thu Mar 12 12:30:36 2015 -0700
+++ b/make/CompileJavaModules.gmk    Thu Mar 12 23:42:43 2015 -0700
@@ -90,12 +90,16 @@

  ################################################################################

+java.compiler_ADD_JAVAC_FLAGS := -Xdoclint:all/protected,-reference 
'-Xdoclint/package:java.*,javax.*'
+
+################################################################################
+
  java.datatransfer_ADD_JAVAC_FLAGS := 
-Xdoclint:all/protected,-reference '-Xdoclint/package:java.*,javax.*'
  java.datatransfer_COPY := flavormap.properties

  ################################################################################

-java.desktop_ADD_JAVAC_FLAGS := 
-Xdoclint:all/protected,-missing,-reference 
'-Xdoclint/package:java.*,javax.*'
+java.desktop_ADD_JAVAC_FLAGS := 
-Xdoclint:all/protected,-missing,-reference 
'-Xdoclint/package:java.*,javax.*'
  java.desktop_COPY := .gif .png .wav .txt .xml .css .pf
  java.desktop_CLEAN := iio-plugin.properties cursors.properties

@@ -336,6 +340,7 @@

  ################################################################################

+jdk.compiler_ADD_JAVAC_FLAGS := -Xdoclint:all/protected 
'-Xdoclint/package:-com.sun.tools.*'
  jdk.compiler_COPY := javax.tools.JavaCompilerTool
  jdk.compiler_CLEAN_FILES := $(wildcard \
      $(patsubst %, 
$(JDK_TOPDIR)/src/jdk.compiler/share/classes/%/*.properties, \