remove ogg, vorbis and vpx static libraries and also some png patches

Author: zilongshanren

contrib/src/ogg/SHA512SUMS

@@ -1 +1 @@
-7cdf40b51a29f4df6f5be2c6946de80aa74c54169ceef2ed089fad21bf035b5672ad7e8983ca4d72edd4bb84c9d4e0077479a20e526e27685d30da03230bbb91  libpng-1.6.12.tar.xz
+8820d2741ec2bd75a1ce984e72b56c888037f2db  libpng-1.6.2.tar.xz

contrib/src/ogg/libogg-1.1.patch

@@ -1,5 +1,5 @@
 # PNG
-PNG_VERSION := 1.6.12
+PNG_VERSION := 1.6.2
 PNG_URL := $(SF)/libpng/libpng16/$(PNG_VERSION)/libpng-$(PNG_VERSION).tar.xz
 
 PKGS += png
@@ -8,17 +8,16 @@ PKGS_FOUND += png
 endif
 
 $(TARBALLS)/libpng-$(PNG_VERSION).tar.xz:
-	$(call download,$(PNG_URL))
-
+	libpng16..a	     $(call download,$(PNG_URL))
+				   
 .sum-png: libpng-$(PNG_VERSION).tar.xz
 
 png: libpng-$(PNG_VERSION).tar.xz .sum-png
 	$(UNPACK)
-	$(APPLY) $(SRC)/png/winrt.patch
-	$(APPLY) $(SRC)/png/bins.patch
-	$(APPLY) $(SRC)/png/automake.patch
 	$(MOVE)
 
+
+
 DEPS_png = zlib $(DEPS_zlib)
 
 .png: png