Feature #61: Begin lock support.
Feature #61: Lock/unlock support.
Feature #61: Lock/unlock support in commit (keep lock flag unsupported now).
Feature #61: Lock/unlock support.
Feature #61: License header.
Feature #61: Fix test (checked about vanile Subversion 1.8 server).
Feature #61: Force lock/unlock support.
Merge branch 'locks'
Feature #61: Begin lock persistece support.
Feature #61: Lock persistence.
internal: Try to keep all data in memory.
internal: Add md5 sum and binary information to persistent cache.
Merge branch 'locks'
Fix #61: Add getLocks test. Fix restart failure.
Fix #61: Add cache commit.
Fix #61: Fix TortoiseSVN repobrowser lock display.
Merge branch 'master' into svn-layout

Conflicts:
	src/main/java/svnserver/config/GitRepositoryConfig.java
	src/test/java/svnserver/SvnTestServer.java