Update protobuf library from 2.3 to 2.6.

Copied in all files from the open source protobuf project at commit
edc5994525c79cd1919859a370837a6ff7c8e308, removing files which have
been renamed (COPYING.txt -> LICENSE, README.txt -> README.md).

Removed 2.3 prebuilts, which is an approach that will not work due to
incompatibility with the 2.6 runtime.

Merged in micro/nano-specific changes in the following files:

-Android.mk - updated list of C++/Java sources, bumped versions
-java/README.txt - merged in micro/nano instructions, bumped versions
-java/pom.xml - merged in micro/nano build rules, set packaging to jar
-src/Makefile.am - merged in references to micro/nano generators
-src/google/protobuf/compiler/javamicro/javamicro_file.h - imported
 google/protobuf/compiler/code_generator.h and removed redundant
 OutputDirectory class.
-src/google/protobuf/compiler/javanano/javanano_file.h - same
-Replaced instances of vector with std::vector as needed to get
 libprotobuf-cpp-full to compile. Plan to upstream this fix per
 discussion with protobuf maintainers.

Reran autogen.sh to update ./configure and associated scripts.

Change-Id: I949d32fb5126f1c05e2a6ed48f6636a4a9b15a48

1 files changed, 8 insertions, 6 deletions

diff --git a/src/google/protobuf/io/gzip_stream.h b/src/google/protobuf/io/gzip_stream.h
index 65dbc5b..7ee24bc 100644
--- a/src/google/protobuf/io/gzip_stream.h
+++ b/src/google/protobuf/io/gzip_stream.h
@@ -45,6 +45,7 @@
 
 #include <zlib.h>
 
+#include <google/protobuf/stubs/common.h>
 #include <google/protobuf/io/zero_copy_stream.h>
 
 namespace google {
@@ -144,12 +145,6 @@ class LIBPROTOBUF_EXPORT GzipOutputStream : public ZeroCopyOutputStream {
       ZeroCopyOutputStream* sub_stream,
       const Options& options);
 
-  // DEPRECATED:  Use one of the above constructors instead.
-  GzipOutputStream(
-      ZeroCopyOutputStream* sub_stream,
-      Format format,
-      int buffer_size = -1) GOOGLE_ATTRIBUTE_DEPRECATED;
-
   virtual ~GzipOutputStream();
 
   // Return last error message or NULL if no error.
@@ -165,6 +160,13 @@ class LIBPROTOBUF_EXPORT GzipOutputStream : public ZeroCopyOutputStream {
   // necessary.
   // Compression may be less efficient stopping and starting around flushes.
   // Returns true if no error.
+  //
+  // Please ensure that block size is > 6. Here is an excerpt from the zlib
+  // doc that explains why:
+  //
+  // In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that avail_out
+  // is greater than six to avoid repeated flush markers due to
+  // avail_out == 0 on return.
   bool Flush();
 
   // Writes out all data and closes the gzip stream.