Use the official zlib repository rather than Chromium's mirror

Historically OSS Mozc has checked out a patched version of zlib from Chromium's repository.  However, OSS Mozc doesn't rely on those local patches in practice.  Thus we will check out zlib from Mark Adler's GitHub repository.
No user-visible behavior change is intended.

BUG=none
TEST=unittest

git-svn-id: https://mozc.googlecode.com/svn/trunk@565 a6090854-d499-a067-5803-1114d4e51264

src/DEPS

@@ -38,7 +38,7 @@ vars = {
   "wtl_revision": "587",
   "zinnia_revision": "16",
   "jsr305_version": "2.0.2",
-  "zlib_revision": "198222",
+  "zlib_revision": "50893291621658f355bc5b4d450a8d06a563053d",
   "japanese_usage_dictionary_revision": "10",
 }
 
@@ -87,7 +87,6 @@ deps_os = {
       "https://github.com/googlei18n/fonttools.git@" +
       Var("fonttools_revision"),
     "src/third_party/zlib/v1_2_8":
-      "https://src.chromium.org/chrome/trunk/src/third_party/zlib@" +
-      Var("zlib_revision"),
+      "https://github.com/madler/zlib.git@" + Var("zlib_revision"),
   },
 }

src/mozc_version_template.txt

@@ -1,6 +1,6 @@
 MAJOR=2
 MINOR=17
-BUILD=2074
+BUILD=2075
 REVISION=102
 # NACL_DICTIONARY_VERSION is the target version of the system dictionary to be
 # downloaded by NaCl Mozc.

src/protobuf/protobuf.gyp

@@ -300,10 +300,8 @@
             ],
           },
           'cflags': [
-            '-Wno-error=uninitialized',
             '-Wno-implicit-function-declaration',
-            '-Wno-uninitialized',
-            '-Wno-unused-value',
+            '-Wno-incompatible-pointer-types-discards-qualifiers',
           ],
           'configurations': {
             'Debug_Base': {