* stable-2.10:
Update version to 2.10
Remove the archetypeRepository property from the mvn archetype:generate
Update the Gerrit version in the plugin development documentation
Update 2.10 release notes
Drop broken Schema migrations
Update version to 2.10-rc2
Conflicts:
VERSION
gerrit-extension-api/pom.xml
gerrit-plugin-api/pom.xml
gerrit-plugin-archetype/pom.xml
gerrit-plugin-gwt-archetype/pom.xml
gerrit-plugin-gwtui/pom.xml
gerrit-plugin-js-archetype/pom.xml
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_52.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_53.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_57.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_59.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_63.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_64.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_65.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_67.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_68.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_69.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_71.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_73.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_74.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_77.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_81.java
gerrit-server/src/main/java/com/google/gerrit/server/schema/Schema_82.java
gerrit-war/pom.xml
Change-Id: I44b2635bfb6b4011cc10f1fe29db5e6e734a9e3c
b67addf513