Allow per project maxObjectSizeLimit.

Project owners can define receive.maxObjectSizeLimit in their
project.config in order to further restrict the global
receive.maxObjectSizeLimit setting from etc/gerrit.config.  The project
specific maxObjectSizeLimit is only honored if smaller than the global
maxObjectSizeLimit, otherwise it is ignored.

Change-Id: Ia14354e0c9b6bfb4fa62295162e8f2c127b09997

gerrit-server/src/main/java/com/google/gerrit/server/project/ProjectState.java

@@ -216,6 +216,10 @@ public class ProjectState {
     return config;
   }
 
+  public long getMaxObjectSizeLimit() {
+    return config.getMaxObjectSizeLimit();
+  }
+
   /** Get the sections that pertain only to this project. */
   List<SectionMatcher> getLocalAccessSections() {
     List<SectionMatcher> sm = localAccessSections;