enable cross-compilation for JDK 8 using the Java9+ --release flag

Author: axtimwalde

pom.xml

@@ -162,11 +162,13 @@
 
 		<!-- Compiler configuration. -->
 		<scijava.jvm.version>1.8</scijava.jvm.version>
+		<scijava.release.version>8</scijava.release.version>
 		<scijava.jvm.test.version>${scijava.jvm.version}</scijava.jvm.test.version>
 		<!-- NB: 1.8.0_101 is needed for SciJava Maven repository HTTPS support. -->
-		<scijava.jvm.build.version>[1.8.0-101,14.9999.9999]</scijava.jvm.build.version>
+		<scijava.jvm.build.version>[1.8.0-101,)</scijava.jvm.build.version>
 		<maven.compiler.source>${scijava.jvm.version}</maven.compiler.source>
 		<maven.compiler.target>${scijava.jvm.version}</maven.compiler.target>
+		<maven.compiler.release>${scijava.release.version}</maven.compiler.release>
 		<maven.compiler.testSource>${scijava.jvm.test.version}</maven.compiler.testSource>
 		<maven.compiler.testTarget>${scijava.jvm.test.version}</maven.compiler.testTarget>
 		<!--
@@ -2015,5 +2017,14 @@
 				<scijava.platform.bits>32</scijava.platform.bits>
 			</properties>
 		</profile>
+		<profile>
+			<id>java-8</id>
+			<activation>
+				<jdk>1.8</jdk>
+			</activation>
+			<properties>
+				<maven.compiler.release />
+			</properties>
+		</profile>
 	</profiles>
 </project>