add glm sub module

Author: MrSapps

.gitmodules

@@ -38,3 +38,6 @@
 [submodule "3rdParty/sol2"]
 	path = 3rdParty/sol2
 	url = https://github.com/ThePhD/sol2.git
+[submodule "3rdParty/glm"]
+	path = 3rdParty/glm
+	url = https://github.com/g-truc/glm.git

3rdParty/glm

@@ -99,6 +99,7 @@ include_directories(
     ${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/nativefiledialog/src/include
     ${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/Detours/src
     ${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/sol2/single
+    ${CMAKE_CURRENT_SOURCE_DIR}/3rdParty/glm
     ${CMAKE_CURRENT_SOURCE_DIR}
     ${GTK3_INCLUDE_DIRS}
 )
@@ -493,7 +494,7 @@ INSTALL(FILES "${CMAKE_CURRENT_SOURCE_DIR}/data/GameDefinitions/Developer mode.j
 if (MSVC)
     # Build cpp files on all cores
 
-    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP /Wall /wd4371 /wd4503 /wd4351 /wd4514 /wd4350 /wd4710 /wd4571 /wd4820 /wd4668 /wd4626 /wd4625 /wd4365 /wd4640 /wd4628 /wd4061 /wd4826 /wd4127 /wd4711 /wd4738 /wd4255 /WX")
+    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP /Wall /wd4201 /wd4324 /wd4464 /wd4371 /wd4503 /wd4351 /wd4514 /wd4350 /wd4710 /wd4571 /wd4820 /wd4668 /wd4626 /wd4625 /wd4365 /wd4640 /wd4628 /wd4061 /wd4826 /wd4127 /wd4711 /wd4738 /wd4255 /WX")
     # Warnings added in VS2013 and later
     if(MSVC_VERSION GREATER 1800)
         SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd5026 /wd5027 /wd4868")