Update boost to 1.56

Closes #1818.

libaegisub/include/libaegisub/lua/utils.h

@@ -16,21 +16,27 @@
 
 #include <libaegisub/fs.h>
 
-#include <boost/exception/detail/attribute_noreturn.hpp>
 #include <lua.hpp>
 #include <string>
 #include <vector>
 #include <type_traits>
 
+#include <boost/config.hpp>
+
+#ifndef BOOST_NORETURN
+#include <boost/exception/detail/attribute_noreturn.hpp>
+#define BOOST_NORETURN BOOST_ATTRIBUTE_NORETURN
+#endif
+
 namespace agi { namespace lua {
 // Exception type for errors where the error details are on the lua stack
 struct error_tag {};
 
 // Below are functionally equivalent to the luaL_ functions, but using a C++
 // exception for stack unwinding
-int BOOST_ATTRIBUTE_NORETURN error(lua_State *L, const char *fmt, ...);
-int BOOST_ATTRIBUTE_NORETURN argerror(lua_State *L, int narg, const char *extramsg);
-int BOOST_ATTRIBUTE_NORETURN typerror(lua_State *L, int narg, const char *tname);
+int BOOST_NORETURN error(lua_State *L, const char *fmt, ...);
+int BOOST_NORETURN argerror(lua_State *L, int narg, const char *extramsg);
+int BOOST_NORETURN typerror(lua_State *L, int narg, const char *tname);
 void argcheck(lua_State *L, bool cond, int narg, const char *msg);
 
 inline void push_value(lua_State *L, bool value) { lua_pushboolean(L, value); }

libaegisub/lua/utils.cpp

@@ -181,7 +181,7 @@ int add_stack_trace(lua_State *L) {
 	return 1;
 }
 
-int BOOST_ATTRIBUTE_NORETURN error(lua_State *L, const char *fmt, ...) {
+int BOOST_NORETURN error(lua_State *L, const char *fmt, ...) {
 	va_list argp;
 	va_start(argp, fmt);
 	luaL_where(L, 1);
@@ -191,7 +191,7 @@ int BOOST_ATTRIBUTE_NORETURN error(lua_State *L, const char *fmt, ...) {
 	throw error_tag();
 }
 
-int BOOST_ATTRIBUTE_NORETURN argerror(lua_State *L, int narg, const char *extramsg) {
+int BOOST_NORETURN argerror(lua_State *L, int narg, const char *extramsg) {
 	lua_Debug ar;
 	if (!lua_getstack(L, 0, &ar))
 		error(L, "bad argument #%d (%s)", narg, extramsg);
@@ -203,7 +203,7 @@ int BOOST_ATTRIBUTE_NORETURN argerror(lua_State *L, int narg, const char *extram
 		narg, ar.name, extramsg);
 }
 
-int BOOST_ATTRIBUTE_NORETURN typerror(lua_State *L, int narg, const char *tname) {
+int BOOST_NORETURN typerror(lua_State *L, int narg, const char *tname) {
 	const char *msg = lua_pushfstring(L, "%s expected, got %s",
 		tname, luaL_typename(L, narg));
 	argerror(L, narg, msg);

boost @ c038171a

-Subproject commit 614aac8fef2a0551610f72e5c4a61085c8c06e35
+Subproject commit c038171a340eac748b2d14882f6f79e803d292f4