GUACAMOLE-773: Bring license details of bundled Java dependencies up-to-date.

doc/licenses/guice-5.0.1/README

@@ -0,0 +1,8 @@
+Google Guice (https://github.com/google/guice)
+----------------------------------------------
+
+    Version: 5.0.1
+    From: 'Google Inc.' (http://www.google.com/)
+    License(s):
+        Apache v2.0
+

doc/licenses/guice-5.0.1/maven-coordinates.txt

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+com.google.inject:guice:jar:5.0.1
+com.google.inject.extensions:guice-assistedinject:jar:5.0.1
+com.google.inject.extensions:guice-servlet:jar:5.0.1