Restore --enable-ivsalloc.

However, unlike before it was removed do not force --enable-ivsalloc
when Darwin zone allocator integration is enabled, since the zone
allocator code uses ivsalloc() regardless of whether
malloc_usable_size() and sallocx() do.

This resolves #211.

1 files changed, 0 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index ef7dbfd..a462d02 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -133,8 +133,6 @@ found in the git revision history:
   - Remove the "stats.huge.allocated", "stats.huge.nmalloc", and
     "stats.huge.ndalloc" mallctls.
   - Remove the --enable-mremap option.
-  - Remove the --enable-ivsalloc option, and merge its functionality into
-    --enable-debug.
   - Remove the "stats.chunks.current", "stats.chunks.total", and
     "stats.chunks.high" mallctls.