Merge pull request #1477 from jonjove/issue-1473-fix-cereal

Replace lib/cereal folder with a submodule

Reviewed-by: MonsieurNicolas

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "lib/libmedida"]
 	path = lib/libmedida
 	url = https://github.com/stellar/medida.git
+[submodule "lib/cereal"]
+	path = lib/cereal
+	url = https://github.com/USCiLab/cereal

Builds/VisualStudio/stellar-core.vcxproj

@@ -121,6 +121,7 @@
     </CustomBuild>
     <PostBuildEvent>
       <Command>robocopy $(MSBuildProjectDirectory)\..\..\docs $(OutDir)\testdata *.cfg &gt; nul
+robocopy $(MSBuildProjectDirectory)\..\..\src\history\serialize-tests $(OutDir)\testdata *.json &gt; nul
 exit /b 0
 </Command>
     </PostBuildEvent>
@@ -179,6 +180,7 @@ exit /b 0
     </CustomBuild>
     <PostBuildEvent>
       <Command>robocopy $(MSBuildProjectDirectory)\..\..\docs $(OutDir)\testdata *.cfg &gt; nul
+robocopy $(MSBuildProjectDirectory)\..\..\src\history\serialize-tests $(OutDir)\testdata *.json &gt; nul
 exit /b 0
 </Command>
     </PostBuildEvent>
@@ -233,6 +235,7 @@ exit /b 0
     </CustomBuild>
     <PostBuildEvent>
       <Command>robocopy $(MSBuildProjectDirectory)\..\..\docs $(OutDir)\testdata *.cfg &gt; nul
+robocopy $(MSBuildProjectDirectory)\..\..\src\history\serialize-tests $(OutDir)\testdata *.json &gt; nul
 exit /b 0
 </Command>
     </PostBuildEvent>
@@ -309,6 +312,7 @@ exit /b 0
     <ClCompile Include="..\..\src\history\HistoryTestsUtils.cpp" />
     <ClCompile Include="..\..\src\history\InferredQuorum.cpp" />
     <ClCompile Include="..\..\src\history\InferredQuorumTests.cpp" />
+    <ClCompile Include="..\..\src\history\SerializeTests.cpp" />
     <ClCompile Include="..\..\src\history\StateSnapshot.cpp" />
     <ClCompile Include="..\..\src\invariant\AccountSubEntriesCountIsValid.cpp" />
     <ClCompile Include="..\..\src\invariant\AccountSubEntriesCountIsValidTests.cpp" />
@@ -743,6 +747,8 @@ exit /b 0
     <None Include="..\..\src\database\readme.md" />
     <None Include="..\..\src\herder\readme.md" />
     <None Include="..\..\src\history\readme.md" />
+    <None Include="..\..\src\history\serialize-tests\stellar-history.livenet.15686975.json" />
+    <None Include="..\..\src\history\serialize-tests\stellar-history.testnet.6714239.json" />
     <None Include="..\..\src\ledger\readme.md" />
     <None Include="..\..\lib\xdrpp\tests\xdrtest.x" />
     <CustomBuild Include="..\..\src\xdr\Stellar-ledger.x">

Builds/VisualStudio/stellar-core.vcxproj.filters

@@ -127,6 +127,9 @@
     <Filter Include="work\tests">
       <UniqueIdentifier>{e28534ec-c0fa-46c7-83f5-92058298855b}</UniqueIdentifier>
     </Filter>
+    <Filter Include="history\tests\serialize-tests">
+      <UniqueIdentifier>{be18f522-3b16-4f78-9e18-85751659363e}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\ledger\LedgerManagerImpl.cpp">
@@ -825,6 +828,9 @@
     <ClCompile Include="..\..\src\database\DatabaseConnectionStringTest.cpp">
       <Filter>database\tests</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\history\SerializeTests.cpp">
+      <Filter>history\tests</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\src\ledger\LedgerManager.h">
@@ -1517,6 +1523,12 @@
     <None Include="..\..\src\history\readme.md">
       <Filter>history</Filter>
     </None>
+    <None Include="..\..\src\history\serialize-tests\stellar-history.livenet.15686975.json">
+      <Filter>history\tests\serialize-tests</Filter>
+    </None>
+    <None Include="..\..\src\history\serialize-tests\stellar-history.testnet.6714239.json">
+      <Filter>history\tests\serialize-tests</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <CustomBuild Include="..\..\src\xdr\Stellar-ledger.x">