Bump pg gem requirement to 0.8.0. Build psql db with UTF8 encoding.

activerecord/Rakefile

@@ -86,8 +86,8 @@ task :rebuild_mysql_databases => 'mysql:rebuild_databases'
 namespace :postgresql do
   desc 'Build the PostgreSQL test databases'
   task :build_databases do
-    %x( createdb activerecord_unittest )
-    %x( createdb activerecord_unittest2 )
+    %x( createdb -E UTF8 activerecord_unittest )
+    %x( createdb -E UTF8 activerecord_unittest2 )
   end
 
   desc 'Drop the PostgreSQL test databases'

ci/geminstaller.yml

@@ -12,7 +12,7 @@ gems:
   #version: >= 2.7
   version: = 2.7
 - name: pg
-  version: >= 0.7.9.2008.10.13
+  version: >= 0.8.0
 - name: rack
   version: '~> 1.0.0'
 - name: rake