Fix .opd handling on IA64, few cleanups.
diff --git a/sysdeps/linux-gnu/ppc/arch.h b/sysdeps/linux-gnu/ppc/arch.h
index 624e18f..7c6480a 100644
--- a/sysdeps/linux-gnu/ppc/arch.h
+++ b/sysdeps/linux-gnu/ppc/arch.h
@@ -4,9 +4,11 @@
 
 #define LT_ELFCLASS	ELFCLASS32
 #define LT_ELF_MACHINE	EM_PPC
+
 #ifdef __powerpc64__ // Says 'ltrace' is 64 bits, says nothing about target.
 #define LT_ELFCLASS2	ELFCLASS64
 #define LT_ELF_MACHINE2	EM_PPC64
+#define ARCH_SUPPORTS_OPD
 #endif
 
 #define PLT_REINITALISATION_BP    "_start"