Rename OFFICIAL_BUILD to OFFICIAL_COLOBOT_BUILD

In order to avoid conflict with OFFICIAL_BUILD variable inside ntverp.h. It caused compilation error "invalid integer expression"

https://github.com/tpn/winsdk-10/blob/master/Include/10.0.10240.0/shared/ntverp.h#L134

CMakeLists.txt

@@ -204,7 +204,7 @@ option(DEV_BUILD "Enable development build (enables some debugging tools, local
 
 # Official build - changes text on the crash screen
 # PLEASE DO NOT USE ON UNOFFICIAL BUILDS. Thanks.
-option(OFFICIAL_BUILD "Official build (changes crash screen text)" OFF)
+option(OFFICIAL_COLOBOT_BUILD "Official build (changes crash screen text)" OFF)
 
 # Portable build - load all data from current directory
 option(PORTABLE "Portable build" OFF)

src/app/signal_handlers.cpp

@@ -133,7 +133,7 @@ void CSignalHandlers::ReportError(const std::string& errorMessage)
     msg << "including information on what you were doing before this happened and all the information below." << std::endl;
     msg << "==============================" << std::endl;
     #if BUILD_NUMBER == 0
-        #ifdef OFFICIAL_BUILD
+        #ifdef OFFICIAL_COLOBOT_BUILD
             msg << "You are running official " << COLOBOT_VERSION_DISPLAY << " build." << std::endl;
         #else
             // COLOBOT_VERSION_DISPLAY doesn't update if you don't run CMake after "git pull"

src/common/version.h.cmake

@@ -4,4 +4,4 @@
 #define COLOBOT_VERSION_DISPLAY "@COLOBOT_VERSION_DISPLAY@"
 
 #define BUILD_NUMBER @BUILD_NUMBER@
-#cmakedefine OFFICIAL_BUILD
+#cmakedefine OFFICIAL_COLOBOT_BUILD