Fixed packaging of java crossbuild jar by forcing all compiled binaries to be output to the java/target directory. The uber crossbuild jar is then assembled within the java/target directory.

Makefile

@@ -1062,7 +1062,7 @@ rocksdbjavastatic: $(java_static_libobjects)
 rocksdbjavastaticrelease: rocksdbjavastatic
 	cd java/crossbuild && vagrant destroy -f && vagrant up linux32 && vagrant halt linux32 && vagrant up linux64 && vagrant halt linux64
 	cd java;jar -cf target/$(ROCKSDB_JAR_ALL) HISTORY*.md
-	cd java;jar -uf target/$(ROCKSDB_JAR_ALL) librocksdbjni-*.so librocksdbjni-*.jnilib
+	cd java/target;jar -uf $(ROCKSDB_JAR_ALL) librocksdbjni-*.so librocksdbjni-*.jnilib
 	cd java/target/classes;jar -uf ../$(ROCKSDB_JAR_ALL) org/rocksdb/*.class org/rocksdb/util/*.class
 
 rocksdbjavastaticpublish: rocksdbjavastaticrelease

java/RELEASE.md

@@ -15,7 +15,7 @@ Once you have these items, run this make command from RocksDB's root source dire
 
 This command will build RocksDB natively on OSX, and will then spin up two Vagrant Virtualbox Ubuntu images to build RocksDB for both 32-bit and 64-bit Linux. 
 
-You can find all native binaries and JARs in the java directory upon completion:
+You can find all native binaries and JARs in the java/target directory upon completion:
 
     librocksdbjni-linux32.so
     librocksdbjni-linux64.so

java/crossbuild/Vagrantfile

@@ -20,7 +20,7 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   end
 
   config.vm.provision :shell, path: "build-linux-centos.sh"
-  config.vm.synced_folder "../", "/rocksdb-build"
+  config.vm.synced_folder "../target", "/rocksdb-build"
   config.vm.synced_folder "../..", "/rocksdb", type: "rsync"
   config.vm.boot_timeout = 1200
 end