Fix SDK build on JDK8

sdk/jme3-terrain-editor/nbproject/genfiles.properties

@@ -1,8 +1,8 @@
-build.xml.data.CRC32=b5a0778e
+build.xml.data.CRC32=e0ac9e91
 build.xml.script.CRC32=5fb89d93
-build.xml.stylesheet.CRC32=a56c6a5b@2.66.1
+build.xml.stylesheet.CRC32=a56c6a5b@2.67.1
 # This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
 # Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
-nbproject/build-impl.xml.data.CRC32=b5a0778e
+nbproject/build-impl.xml.data.CRC32=e0ac9e91
 nbproject/build-impl.xml.script.CRC32=fe2b940f
-nbproject/build-impl.xml.stylesheet.CRC32=238281d1@2.66.1
+nbproject/build-impl.xml.stylesheet.CRC32=238281d1@2.67.1

sdk/jme3-terrain-editor/nbproject/project.xml

@@ -42,6 +42,15 @@
                         <specification-version>1.32.1</specification-version>
                     </run-dependency>
                 </dependency>
+                <dependency>
+                    <code-name-base>org.netbeans.modules.projectapi</code-name-base>
+                    <build-prerequisite/>
+                    <compile-dependency/>
+                    <run-dependency>
+                        <release-version>1</release-version>
+                        <specification-version>1.60.2</specification-version>
+                    </run-dependency>
+                </dependency>
                 <dependency>
                     <code-name-base>org.netbeans.modules.settings</code-name-base>
                     <build-prerequisite/>