Merge branch 'stable-2.10' into stable-2.11

* stable-2.10:
  Improve class naming of group inclusion cache loaders
  Fix NPE when indexing changed lines
  Fix LDAP authentication for the RFC2307 server type
  Lazily lookup LDAP group memberships
  Configurable ldap.fetchMemberOfEagerly to optimize LDAP login
  Improve LDAP login times, transfer 40x less data.
  Reduce number of LDAP queries when having multiple accountBases
  Fix LDAP connection pool configuration.
  Improve method and variable names related to group inclusion caches
  Honor ldap.connectTimeout also without connection pooling
  Add config options of LDAP 'connection pooling'

Conflicts:
	gerrit-server/src/main/java/com/google/gerrit/server/auth/ldap/Helper.java
	gerrit-server/src/main/java/com/google/gerrit/server/index/ChangeField.java

Change-Id: I2ad9db8b08088e80950751fd277a49d30a86ca85