Kernel/LibC/DynamicLoader: Implement thread local storage

For some reason this does not work on 32 bit version, so it is disabled
on that platform. I'll have to look into it later to find the bug :)

kernel/include/kernel/ELF.h

@@ -8,8 +8,15 @@ namespace Kernel::ELF
 
 	struct LoadResult
 	{
-		bool has_interpreter;
+		struct TLS
+		{
+			vaddr_t addr;
+			size_t size;
+		};
+
+		bool open_execfd;
 		vaddr_t entry_point;
+		BAN::Optional<TLS> master_tls;
 		BAN::Vector<BAN::UniqPtr<MemoryRegion>> regions;
 	};