Contact proper debuggerd when crashing.

Make the request structure match the new structure found in debuggerd
code.

On 64 bit systems, make sure that the 32 bit compiled linker is contacted.

Bug: https://code.google.com/p/android/issues/detail?id=97024
Change-Id: I675b8ff222fcf836b05de4e9b5976ff91ca929bf

linker/Android.mk

@@ -36,6 +36,10 @@ LOCAL_CONLYFLAGS += \
 LOCAL_CPPFLAGS += \
     -std=gnu++11 \
 
+ifeq ($(TARGET_IS_64_BIT),true)
+LOCAL_CPPFLAGS += -DTARGET_IS_64_BIT
+endif
+
 # We need to access Bionic private headers in the linker.
 LOCAL_CFLAGS += -I$(LOCAL_PATH)/../libc/