bazel: build a polygerrit war too.

Change-Id: Id45967aa844faedee3ab501491cd30cdb903a789

BUILD

@@ -20,3 +20,7 @@ genrule(
 pkg_war(name = 'gerrit')
 pkg_war(name = 'headless', ui = None)
 pkg_war(name = 'release', ui = 'ui_optdbg_r', context = ['//plugins:core'])
+pkg_war(
+  name = "polygerrit",
+  ui = "polygerrit"
+)

Documentation/dev-bazel.txt

@@ -38,15 +38,18 @@ To build the Gerrit web application that includes GWT UI and PolyGerrit UI:
   bazel build gerrit
 ----
 
-[NOTE]
-PolyGerrit UI not yet working.
-
 The output executable WAR will be placed in:
 
 ----
   bazel-bin/gerrit.war
 ----
 
+to run,
+
+----
+  $(bazel info output_base)/external/local_jdk/bin/java \
+     -jar bazel-bin/release.war daemon -d ../gerrit_testsite
+----
 
 === Headless Mode
 

tools/bzl/pkg_war.bzl

@@ -53,10 +53,11 @@ def _add_file(in_file, output):
   ]
 
 def _make_war(input_dir, output):
-  return ''.join([
-    '(root=$(pwd) && ',
-    'cd %s && ' % input_dir,
-    'zip -9qr ${root}/%s .)' % (output.path),
+  return '(%s)' % ' && '.join([
+    'root=$(pwd)',
+    'cd %s' % input_dir,
+    "find . -exec touch -t 198001010000 '{}' ';' 2> /dev/null",
+    'zip -9qr ${root}/%s .' % (output.path),
   ])
 
 def _war_impl(ctx):
@@ -126,8 +127,11 @@ _pkg_war = rule(
 
 def pkg_war(name, ui = 'ui_optdbg', context = [], **kwargs):
   ui_deps = []
-  if ui:
+  if ui == 'polygerrit' or ui == 'ui_optdbg' or ui == 'ui_optdbg_r':
+    ui_deps.append('//polygerrit-ui/app:polygerrit_ui')
+  if ui != 'polygerrit':
     ui_deps.append('//gerrit-gwtui:%s' % ui)
+
   _pkg_war(
     name = name,
     libs = LIBS,