1.8.0: fixed loading of native library + enabled tests

Signed-off-by: Miroslav Šulc <fordfrog@gentoo.org>

dev-java/lz4-java/files/lz4-java-1.8.0-fix-load.patch

@@ -0,0 +1,32 @@
+--- a/src/java/net/jpountz/util/Native.java
++++ b/src/java/net/jpountz/util/Native.java
+@@ -100,17 +100,18 @@ public enum Native {
+       return;
+     }
+ 
+-    cleanupOldTempLibs();
++//    cleanupOldTempLibs();
+ 
+     // Try to load lz4-java (liblz4-java.so on Linux) from the java.library.path.
++    final File library = new File(System.mapLibraryName("lz4-java"));
+     try {
+-      System.loadLibrary("lz4-java");
++      System.load(library.getAbsolutePath());
+       loaded = true;
+       return;
+     } catch (UnsatisfiedLinkError ex) {
+       // Doesn't exist, so proceed to loading bundled library.
+     }
+-
++/*
+     String resourceName = resourceName();
+     InputStream is = Native.class.getResourceAsStream(resourceName);
+     if (is == null) {
+@@ -158,6 +159,6 @@ public enum Native {
+           tempLib.deleteOnExit();
+ 	tempLibLock.deleteOnExit();
+       }
+-    }
++    }*/
+   }
+ }

dev-java/lz4-java/lz4-java-1.8.0-r4.ebuild

@@ -17,9 +17,6 @@ S="${WORKDIR}/${P}"
 LICENSE="Apache-2.0"
 SLOT="0"
 KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~x86"
-# tests want sofile built into jar.
-# cannot find /net/jpountz/util/linux/amd64/liblz4-java.so
-RESTRICT="test"
 
 DEPEND="
 	app-arch/lz4:=
@@ -31,6 +28,8 @@ RDEPEND="
 	app-arch/lz4:=
 	>=virtual/jre-1.8:*"
 
+PATCHES=( "${FILESDIR}/${P}-fix-load.patch" )
+
 DOCS=( CHANGES.md README.md )
 
 JAVA_AUTOMATIC_MODULE_NAME="org.lz4.java"
@@ -39,6 +38,10 @@ JAVA_TEST_GENTOO_CLASSPATH="junit-4 randomized-runner"
 JAVA_TEST_RESOURCE_DIRS="src/test-resources"
 JAVA_TEST_SRC_DIR="src/test"
 
+src_prepare() {
+	default
+}
+
 src_compile() {
 	# remove precompiled native libraries
 	rm -r src/resources || die