update new sdk

android/external/flatbuffers/.gitattributes

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+* text=auto

android/external/flatbuffers/.gitignore

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+*_wire.txt
+*_wire.bin
+.DS_Store
+*.o
+*.o.d
+*.class
+*.a
+*~
+*.vcxproj
+*.vcxproj.filters
+*.vcxproj.user
+*.sln
+*.suo
+*.keystore
+**/bin/**
+**/gen/**
+**/libs/**
+**/obj/**
+**/*.dir/**
+**/CMakeFiles/**
+**/cmake_install.cmake
+**/install_manifest.txt
+**/CMakeCache.txt
+**/CMakeTestfile.cmake
+**/Debug/**
+**/Release/**
+build.xml
+local.properties
+project.properties
+proguard-project.txt
+linklint_results
+Makefile
+flatc
+flatc.exe
+flathash
+flathash.exe
+flattests
+flattests.exe
+flatsamplebinary
+flatsamplebinary.exe
+flatsampletext
+flatsampletext.exe
+grpctest
+grpctest.exe
+snapshot.sh
+tests/go_gen
+tests/monsterdata_java_wire.mon
+tests/monsterdata_go_wire.mon
+tests/monsterdata_javascript_wire.mon
+tests/unicode_test.mon
+CMakeLists.txt.user
+CMakeScripts/**
+CTestTestfile.cmake
+FlatBuffers.cbp
+build/Xcode/FlatBuffers.xcodeproj/project.xcworkspace/**
+build/Xcode/FlatBuffers.xcodeproj/xcuserdata/**
+FlatBuffers.xcodeproj/
+java/.idea
+java/*.iml
+.idea
+*.iml
+target
+**/*.pyc
+build/VS2010/FlatBuffers.sdf
+build/VS2010/FlatBuffers.opensdf
+build/VS2010/ipch/**/*.ipch
+*.so
+Testing/Temporary