Add basic ReHLDS and ReGameDLL support (#417)

* Add ReHLDS API files and its dependencies

Note: This has been stolen from ReAPI AMXX module and modified/adjusted to match AMXX existing includes and to provide as less dependencies as possible as well

* Add the necessary files to get ReHLDS interface

* Split SV_DropClient into pre/post code

* Init ReHLDS API and add SV_DropClient hook

* Add Cvar_DirectSet hook and adjust code with helpers

Note: we don't need to split code here. This is pretty much the naive and straight way, but fairly enough for our case. If it happens we got a lot more hooks, we may consider to use some class to manage better the things.

* Move platform and interface stuff in their own files in public directory

* Make sure to init cvar stuff after ReHLDS

* Add ReGameDLL API files and its dependencies in cstrike module

* Init ReHLDS in cstrike module and adjust code

Note: About cs_uset_set_model(). ReHLDS API doesn't offer a way to know directly the precached models, so instead of looping through all the ressources, the models list is saved one time at map change into a hashmap.

* Init ReGameDLL and adjust code

* Fix linux compilation

* Init ReGameDLL in fakemeta module and adjust code

* Rename /reapi directory to /resdk to avoid confusion

* Retrieve gamerules pointer through InstallGameRules in fakemeta module

* Retrieve gamerules pointer through InstallGameRules in cstrike module

Note: actually gamerules is not used if regamedll is enabled, but it could be used in future natives.

* Fix a typo when ReGameDLL is not enabled

* Fix missing interface check for ReHLDS.

I'm pretty sure I was checking at the very first since I worked first on vanilla version of engine, looks like change has been lost.

modules/fakemeta/msvc12/fakemeta.vcxproj

@@ -55,7 +55,7 @@
     <ClCompile>
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\;..\..\..\public;..\..\..\public\sdk;..\..\..\public\amtl;..\..\third_party;..\..\third_party\hashing;$(METAMOD)\metamod;$(HLSDK)\common;$(HLSDK)\engine;$(HLSDK)\dlls;$(HLSDK)\pm_shared;$(HLSDK)\public;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;FAKEMETA_EXPORTS;HAVE_STDINT_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;FAKEMETA_EXPORTS;HAVE_STDINT_H;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <MinimalRebuild>true</MinimalRebuild>
       <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
       <RuntimeLibrary>MultiThreadedDebug</RuntimeLibrary>
@@ -78,7 +78,7 @@
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
       <AdditionalIncludeDirectories>..\;..\..\..\public;..\..\..\public\sdk;..\..\..\public\amtl;..\..\third_party;..\..\third_party\hashing;$(METAMOD)\metamod;$(HLSDK)\common;$(HLSDK)\engine;$(HLSDK)\dlls;$(HLSDK)\pm_shared;$(HLSDK)\public;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;FAKEMETA_EXPORTS;HAVE_STDINT_H;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;FAKEMETA_EXPORTS;HAVE_STDINT_H;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
       <RuntimeTypeInfo>false</RuntimeTypeInfo>
       <PrecompiledHeader>
@@ -97,6 +97,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\..\..\public\memtools\MemoryUtils.cpp" />
+    <ClCompile Include="..\..\..\public\resdk\mod_regamedll_api.cpp" />
     <ClCompile Include="..\fakemeta_amxx.cpp" />
     <ClCompile Include="..\fm_tr.cpp" />
     <ClCompile Include="..\fm_tr2.cpp" />
@@ -114,6 +115,12 @@
   <ItemGroup>
     <ClInclude Include="..\..\..\public\HLTypeConversion.h" />
     <ClInclude Include="..\..\..\public\memtools\MemoryUtils.h" />
+    <ClInclude Include="..\..\..\public\resdk\common\hookchains.h" />
+    <ClInclude Include="..\..\..\public\resdk\cstrike\regamedll_api.h" />
+    <ClInclude Include="..\..\..\public\resdk\cstrike\regamedll_const.h" />
+    <ClInclude Include="..\..\..\public\resdk\cstrike\regamedll_interfaces.h" />
+    <ClInclude Include="..\..\..\public\resdk\mod_regamedll_api.h" />
+    <ClInclude Include="..\..\..\public\resdk\mod_rehlds_api.h" />
     <ClInclude Include="..\fakemeta_amxx.h" />
     <ClInclude Include="..\fm_tr.h" />
     <ClInclude Include="..\dllfunc.h" />

modules/fakemeta/msvc12/fakemeta.vcxproj.filters

@@ -36,6 +36,15 @@
     <Filter Include="Memtools">
       <UniqueIdentifier>{e1b28b22-6fde-4e1f-a982-f37dec584571}</UniqueIdentifier>
     </Filter>
+    <Filter Include="ReSDK">
+      <UniqueIdentifier>{395f243b-8294-49ad-a959-d3d9ca6b79db}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="ReSDK\common">
+      <UniqueIdentifier>{87a7e30d-f917-4853-b5b9-56782049cee6}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="ReSDK\cstrike">
+      <UniqueIdentifier>{0d1c5025-071d-43aa-b19a-2eee0d34a906}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\fakemeta_amxx.cpp">
@@ -80,6 +89,9 @@
     <ClCompile Include="..\pdata_gamerules.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\public\resdk\mod_regamedll_api.cpp">
+      <Filter>ReSDK</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\fakemeta_amxx.h">
@@ -124,6 +136,24 @@
     <ClInclude Include="..\pdata_shared.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\public\resdk\common\hookchains.h">
+      <Filter>ReSDK\common</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\public\resdk\cstrike\regamedll_api.h">
+      <Filter>ReSDK\cstrike</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\public\resdk\cstrike\regamedll_const.h">
+      <Filter>ReSDK\cstrike</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\public\resdk\cstrike\regamedll_interfaces.h">
+      <Filter>ReSDK\cstrike</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\public\resdk\mod_regamedll_api.h">
+      <Filter>ReSDK</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\..\public\resdk\mod_rehlds_api.h">
+      <Filter>ReSDK</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\..\plugins\include\fakemeta.inc">