IllegalAccessException in OSGi.

If I try to call the Jimfs via Paths.get of a Jimfs URI inside an OSGi bundle, I get an illegal access exception from the reflection code in the file system provider. I'm not sure what the fuss is about: this is a pax-exam osgi test that uses Jimfs, and it so all the Jimfs stuff should be in one class loader: the class loader for the jimfs bundle.

In the debugger, toPath.getClass().getClassLoader() is null. fileSystem.getClass().getClassLoader() is org.eclipse.osgi.internal.loader.EquinoxClassLoader@1437268e[com.google.jimfs:1.1.0(id=37)] -- the jimfs bundle.

I see; the collection of file systems in the main 'Paths' class are all loaded by the app class loader, so we're using SystemJimfsClassLoader from the wrong class loader.

Perhaps this is just a typical 'OSGi versus SPI' problem?

```

Class sun.reflect.Reflection can not access a member of class com.google.common.jimfs.JimfsFileSystem with modifiers "public"

"main@1" prio=5 tid=0x1 nid=NA runnable
java.lang.Thread.State: RUNNABLE
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:109)
at java.lang.reflect.AccessibleObject.slowCheckMemberAccess(AccessibleObject.java:261)
at java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:253)
at java.lang.reflect.Method.invoke(Method.java:599)
at com.google.common.jimfs.SystemJimfsFileSystemProvider.toPath(SystemJimfsFileSystemProvider.java:179)
at com.google.common.jimfs.SystemJimfsFileSystemProvider.getPath(SystemJimfsFileSystemProvider.java:144)
at java.nio.file.Paths.get(Paths.java:143)
at com.basistech.rosette.osgi.util.NioPathDeserializer.deserialize(NioPathDeserializer.java:42)
at com.basistech.rosette.osgi.util.NioPathDeserializer.deserialize(NioPathDeserializer.java:31)
at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:490)
at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:95)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:260)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:125)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3789)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2798)
at com.basistech.rosette.osgi.util.OsgiUtils.deserializeYamlConfiguration(OsgiUtils.java:116)
at com.basistech.rosette.osgi.util.AbstractComponentService.createFactory(AbstractComponentService.java:47)

```