Merge branch 'hotfix-1.6.3' into develop

Conflicts:
	core/src/main/java/com/orientechnologies/orient/core/storage/impl/local/paginated/OLocalPaginatedStorage.java
	core/src/main/java/com/orientechnologies/orient/core/storage/impl/local/paginated/OPaginatedCluster.java
	core/src/main/java/com/orientechnologies/orient/core/storage/impl/local/paginated/base/ODurablePage.java