Fix 306310 3.8.0 release tarball missing some files



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12964 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/Makefile.am b/Makefile.am
index 48ea4fc..4d1f682 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -100,6 +100,7 @@
 	README_MISSING_SYSCALL_OR_IOCTL \
 	README.s390 \
 	README.android \
+	README.android_emulator \
 	README.mips \
 	NEWS.old \
 	valgrind.pc.in \