Added libjpeg and zlib to SDK

native_client_sdk/src/libraries/zlib/library.dsc

Index: native_client_sdk/src/libraries/zlib/library.dsc
diff --git a/native_client_sdk/src/libraries/zlib/library.dsc b/native_client_sdk/src/libraries/zlib/library.dsc
new file mode 100644
index 0000000000000000000000000000000000000000..2ce423a32db1687a5bfe47559402bd0775755121
--- /dev/null
+++ b/native_client_sdk/src/libraries/zlib/library.dsc
@@ -0,0 +1,56 @@
+{
+  'TOOLS': ['newlib', 'glibc', 'linux', 'win'],
+  'SEARCH': [
+    '../../../../third_party/zlib',
+  ],
+  'TARGETS': [
+    {
+      'NAME' : 'zlib',
+      'TYPE' : 'lib',
+      'INCLUDES': ['../../include/zlib'],      
+      'SOURCES' : [
+        'adler32.c',
+        'compress.c',
+        'contrib',
+        'crc32.c',
+        'deflate.c',
+        'gzio.c',
+        'infback.c',
+        'inffast.c',
+        'inflate.c',
+        'inftrees.c',
+        'trees.c',
+        'uncompr.c',
+        'zutil.c',
+      ],
+    }
+  ],
+  'HEADERS': [
+    {
+      'DEST': 'include/zlib',
+      'FILES': [
+        'crc32.h',
+        'deflate.h',
+        'inffast.h',
+        'inffixed.h',
+        'inflate.h',
+        'inftrees.h',
+        'mozzconf.h',
+        'trees.h',
+        'zconf.h',
+        'zlib.h',
+        'zutil.h',
+      ],
+    },
+  ],
+  'DATA': [
+    'LICENSE',
+    'google.patch',
+    'mixed-source.patch',
+    'README.chromium',
+  ],
+  'DEST': 'src',
+  'NAME': 'zlib',
+  'EXPERIMENTAL': True,
+}
+