Added VertexId Management
Modified vertex increment method
Modified vertex increment method
Modified vertex increment method
Modified vertex increment method
Modified vertex increment method
Modified vertex increment method
Merge branch 'master' of github.com:yoshitomo0912/blueprints-ramcloud-graph into yoshi

Conflicts:
	src/main/java/com/tinkerpop/blueprints/impls/ramcloud/RamCloudGraph.java
	src/main/java/com/tinkerpop/blueprints/impls/ramcloud/RamCloudIndex.java