fix for xcode 'legacy' build locations, so that products from Pods.xcodeproj get…

fix for xcode 'legacy' build locations, so that products from Pods.xcodeproj get resolved correctly from user's xcodeproj targets, updating changelog

CHANGELOG.md

@@ -65,6 +65,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
   [Boris Bügling](https://github.com/neonichu)
   [#2912](https://github.com/CocoaPods/CocoaPods/issues/2912)
 
+* Adding Xcode Legacy build location support for default Pods.xcodeproj.  
+  [Sam Marshall](https://github.com/samdmarshall)
+
 ##### Bug Fixes
 
 * Added support for .tpp C++ header files in specs (previously were getting

lib/cocoapods/project.rb

@@ -17,6 +17,9 @@ module Pod
       @refs_by_absolute_path = {}
       @pods = new_group('Pods')
       @development_pods = new_group('Development Pods')
+      configs = root_object.build_configuration_list.build_configurations
+      settings_for_all_configs = configs.map { |c| c.build_settings }
+      settings_for_all_configs.each { |settings| settings['SYMROOT'] = '${SRCROOT}/../build' }
     end
 
     # @return [PBXGroup] The group for the support files of the aggregate