libsndfile: update to 1.0.28

Signed-off-by: Peter Wagner <tripolar@gmx.at>

libs/libsndfile/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libsndfile
-PKG_VERSION:=1.0.26
-PKG_RELEASE:=2
+PKG_VERSION:=1.0.28
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.mega-nerd.com/libsndfile/files/
-PKG_MD5SUM:=ec810a0c60c08772a8a5552704b63393
+PKG_HASH:=1ff33929f042fa333aed1e8923aa628c3ee9e1eb85512686c55092d1e5a9dfa9
 
 PKG_LICENSE:=LGPLv2.1
 PKG_LICENSE_FILES:=COPYING