update ChangeLog

Change-Id: I3b930aa6cb72d17f41e52d645de1d9b2f3a0238b

ChangeLog

@@ -1,3 +1,5 @@
+f59c0b4 iosbuild.sh: specify optimization flags
+8d34ea3 update ChangeLog (tag: v0.4.1-rc1)
 dbc3da6 makefile.unix: add vwebp.1 to the dist target
 89a7c83 update ChangeLog
 ffe67ee Merge "update NEWS for the next release" into 0.4.1

iosbuild.sh

@@ -72,7 +72,7 @@ for PLATFORM in ${PLATFORMS}; do
   mkdir -p "${ROOTDIR}"
 
   SDKROOT="${PLATFORMSROOT}/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDK}.sdk/"
-  CFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT}"
+  CFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT} -O3 -DNDEBUG"
   LDFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT}"
 
   if [[ -z "${XCODE}" ]]; then