Mark ARMv4 as not supporting unaligned accesses (not just ARMv5 and ARMv6);
apparently Debian still targets these by default, giving us segfaults on
armel.

R=sanjay


git-svn-id: https://snappy.googlecode.com/svn/trunk@64 03e5f5b5-db94-4691-08a0-1a8bf15f6143
diff --git a/snappy-stubs-internal.h b/snappy-stubs-internal.h
index 6817c2b..12393b6 100644
--- a/snappy-stubs-internal.h
+++ b/snappy-stubs-internal.h
@@ -118,6 +118,8 @@
 // This is a mess, but there's not much we can do about it.
 
 #elif defined(__arm__) && \
+      !defined(__ARM_ARCH_4__) && \
+      !defined(__ARM_ARCH_4T__) && \
       !defined(__ARM_ARCH_5__) && \
       !defined(__ARM_ARCH_5T__) && \
       !defined(__ARM_ARCH_5TE__) && \