Add the files added in #4485.

Makefile.am

@@ -459,11 +459,13 @@ objectivec_EXTRA_DIST=                                                       \
   objectivec/GPBWireFormat.m                                                 \
   objectivec/ProtocolBuffers_iOS.xcodeproj/project.pbxproj                   \
   objectivec/ProtocolBuffers_iOS.xcodeproj/project.xcworkspace/contents.xcworkspacedata \
+  objectivec/ProtocolBuffers_iOS.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist \
   objectivec/ProtocolBuffers_iOS.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings \
   objectivec/ProtocolBuffers_iOS.xcodeproj/xcshareddata/xcschemes/PerformanceTests.xcscheme \
   objectivec/ProtocolBuffers_iOS.xcodeproj/xcshareddata/xcschemes/ProtocolBuffers.xcscheme \
   objectivec/ProtocolBuffers_OSX.xcodeproj/project.pbxproj                   \
   objectivec/ProtocolBuffers_OSX.xcodeproj/project.xcworkspace/contents.xcworkspacedata \
+  objectivec/ProtocolBuffers_OSX.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist \
   objectivec/ProtocolBuffers_OSX.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings \
   objectivec/ProtocolBuffers_OSX.xcodeproj/xcshareddata/xcschemes/PerformanceTests.xcscheme \
   objectivec/ProtocolBuffers_OSX.xcodeproj/xcshareddata/xcschemes/ProtocolBuffers.xcscheme \