Work around variables in the current frame being unreachable in lldb.

See
https://developer.apple.com/library/mac/releasenotes/DeveloperTools/RN-X
code/Chapters/xc6_release_notes.html#//apple_ref/doc/uid/TP40001051-CH4-
DontLinkElementID_23, Known Issues > Debugger.

Few.xcodeproj/project.pbxproj

@@ -986,6 +986,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.3;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
+				OTHER_SWIFT_FLAGS = "-Xfrontend -serialize-debugging-options";
 				SDKROOT = macosx;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				VERSIONING_SYSTEM = "apple-generic";
@@ -1024,6 +1025,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.3;
 				MTL_ENABLE_DEBUG_INFO = NO;
+				OTHER_SWIFT_FLAGS = "-Xfrontend -serialize-debugging-options";
 				SDKROOT = macosx;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";