Remove exception grant from lib/x*c files.  Don't build xstrdup.
diff --git a/lib/Makefile.am b/lib/Makefile.am
index fbe119d..7a30a92 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -35,7 +35,7 @@
 
 noinst_LIBRARIES = libeu.a
 
-libeu_a_SOURCES = xstrdup.c xstrndup.c xmalloc.c next_prime.c \
+libeu_a_SOURCES = xstrndup.c xmalloc.c next_prime.c \
 		  crc32.c crc32_file.c
 
 noinst_HEADERS = fixedsizehash.h system.h dynamicsizehash.h list.h