Build problem - missing binaries folder in build/classes/org/trifort/rootbeer/runtime/

Hello Phil,

I think you forgot one major issue in ```build.xml```.

Otherwise the ```binaries``` folder is missing in ```build/classes/org/trifort/rootbeer/runtime/```
You could call ```./csrc/release_binaries``` but I think its more comfortable in ```build.xml```.

Thanks!

Martin

```
$ ant clean && ant && ./pack-rootbeer && java -jar Rootbeer.jar -printdeviceinfo
...
java.io.FileNotFoundException: src/org/trifort/rootbeer/runtime/binaries/rootbeer.dylib (No such file or directory)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(FileInputStream.java:120)
	at java.io.FileInputStream.<init>(FileInputStream.java:79)
	at org.trifort.rootbeer.runtime.CUDALoader.extract(CUDALoader.java:105)
	at org.trifort.rootbeer.runtime.CUDALoader.<init>(CUDALoader.java:35)
	at org.trifort.rootbeer.runtime.Rootbeer.<clinit>(Rootbeer.java:24)
	at org.trifort.rootbeer.entry.Main.printDeviceInfo(Main.java:195)
	at org.trifort.rootbeer.entry.Main.run(Main.java:160)
	at org.trifort.rootbeer.entry.Main.main(Main.java:211)
Exception in thread "main" java.lang.ExceptionInInitializerError
	at org.trifort.rootbeer.entry.Main.printDeviceInfo(Main.java:195)
	at org.trifort.rootbeer.entry.Main.run(Main.java:160)
	at org.trifort.rootbeer.entry.Main.main(Main.java:211)
Caused by: java.lang.RuntimeException: java.io.FileNotFoundException: src/org/trifort/rootbeer/runtime/binaries/rootbeer.dylib (No such file or directory)
	at org.trifort.rootbeer.runtime.CUDALoader.extract(CUDALoader.java:120)
	at org.trifort.rootbeer.runtime.CUDALoader.<init>(CUDALoader.java:35)
	at org.trifort.rootbeer.runtime.Rootbeer.<clinit>(Rootbeer.java:24)
	... 3 more
Caused by: java.io.FileNotFoundException: src/org/trifort/rootbeer/runtime/binaries/rootbeer.dylib (No such file or directory)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(FileInputStream.java:120)
	at java.io.FileInputStream.<init>(FileInputStream.java:79)
	at org.trifort.rootbeer.runtime.CUDALoader.extract(CUDALoader.java:105)
	... 5 more
``