Escape unescaped angle brackets in javadoc

In ab11101fb2240a15cc6fdf1e31cdd675024edc7e {@code} tags got removed
from within a few javadoc <pre> tags, arguing that they are already in
a <pre> block. But <pre> on it's own does not allow unescaped use of
angle brackets, and hence javadoc building fails [1] again on Java 8.

Re-adding {@code} would be the canonical fix, as the {@code}
tag (quoting from the javadoc man page):

  Displays text in code font without interpreting the text as HTML
  markup or nested javadoc tags.

So it allows both using angle and curly brackets within {@code}.

However, as Eclipse currently chokes on braces within {@code} and
displays warnings [2], we escape the angle brackets for now to make
both eclipse and javadoc happy.

[1]

  [...]/registration/DynamicItem.java:70: error: malformed HTML
   *   DynamicSet.itemOf(binder(), new TypeLiteral<Thing<Foo>>() {});
                                                  ^
See
  http://builds.quelltextlich.at/gerrit/nightly/master-java_8/2015-06-14/extension-api-javadoc.jar.build.stderr.txt
  http://builds.quelltextlich.at/gerrit/nightly/master-java_8/2015-06-14/index.html#extension-api-javadoc.jar

[2] See the corresponding Eclipse bugs:
  https://bugs.eclipse.org/bugs/show_bug.cgi?id=258706
  https://bugs.eclipse.org/bugs/show_bug.cgi?id=206345

Change-Id: I39b2cfd06cbc5bd5d6a46dd567ac1abf21f09ee8
diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicItem.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicItem.java
index 1388637..da7db17 100644
--- a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicItem.java
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicItem.java
@@ -67,7 +67,7 @@
    * <p>
    * Items must be defined in a Guice module before they can be bound:
    * <pre>
-   *   DynamicSet.itemOf(binder(), new TypeLiteral<Thing<Foo>>() {});
+   *   DynamicSet.itemOf(binder(), new TypeLiteral&lt;Thing&lt;Foo&gt;&gt;() {});
    * </pre>
    *
    * @param binder a new binder created in the module.
diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicMap.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicMap.java
index abf944a..d3db2e9 100644
--- a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicMap.java
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicMap.java
@@ -67,8 +67,8 @@
    * Maps must be defined in a Guice module before they can be bound:
    *
    * <pre>
-   * DynamicMap.mapOf(binder(), new TypeLiteral<Thing<Bar>>(){});
-   * bind(new TypeLiteral<Thing<Bar>>() {})
+   * DynamicMap.mapOf(binder(), new TypeLiteral&lt;Thing&lt;Bar&gt;&gt;(){});
+   * bind(new TypeLiteral&lt;Thing&lt;Bar&gt;&gt;() {})
    *   .annotatedWith(Exports.named(&quot;foo&quot;))
    *   .to(Impl.class);
    * </pre>
diff --git a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicSet.java b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicSet.java
index 82613c7..c99f233 100644
--- a/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicSet.java
+++ b/gerrit-extension-api/src/main/java/com/google/gerrit/extensions/registration/DynamicSet.java
@@ -61,7 +61,7 @@
    * <p>
    * Sets must be defined in a Guice module before they can be bound:
    * <pre>
-   *   DynamicSet.setOf(binder(), new TypeLiteral<Thing<Foo>>() {});
+   *   DynamicSet.setOf(binder(), new TypeLiteral&lt;Thing&lt;Foo&gt;&gt;() {});
    * </pre>
    *
    * @param binder a new binder created in the module.