Update ChangeLog generation

Let's see if I can make a release on Mac...

Makefile.am

diff --git a/Makefile.am b/Makefile.am
index eb46cea..f9f6e36 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,7 +36,7 @@
 $(srcdir)/ChangeLog:
 	$(AM_V_GEN) if test -d "$(top_srcdir)/.git"; then \
 	  (GIT_DIR=$(top_srcdir)/.git \
-	   $(GIT) log $(CHANGELOG_RANGE) --stat) | fmt --split-only > $@.tmp \
+	   $(GIT) log $(CHANGELOG_RANGE) --stat) > $@.tmp \
 	  && mv -f $@.tmp "$(srcdir)/ChangeLog" \
 	  || ($(RM) $@.tmp; \
 	      echo Failed to generate ChangeLog, your ChangeLog may be outdated >&2; \