ship lua51.dll with stratagus

CMakeLists.txt

@@ -1216,6 +1216,10 @@ if(WIN32 AND ENABLE_NSIS AND MAKENSIS_FOUND)
 		file(COPY ${GLIB_DLL} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
 		file(COPY ${GTHREAD_DLL} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
 	endif()
+	# also ship lua51.dll
+	find_file(LUA_DLL lua51.dll HINTS ${CMAKE_PREFIX_PATH} PATH_SUFFIXES bin lib)
+	file(COPY ${LUA_DLL} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
+	set(MAKENSIS_FLAGS ${MAKENSIS_FLAGS} -DLUADLL=lua51.dll)
 	add_custom_command(OUTPUT Stratagus-${STRATAGUS_VERSION}${MAKENSIS_SUFFIX}
 		COMMAND ${MAKENSIS} ARGS ${MAKENSIS_FLAGS} -DVERSION=${STRATAGUS_VERSION} -DVIVERSION=${STRATAGUS_VERSION_FULL} ${CMAKE_CURRENT_SOURCE_DIR}/src/win32/stratagus.nsi
 		DEPENDS src/win32/stratagus.nsi stratagus COPYING

src/win32/stratagus.nsi

@@ -223,6 +223,7 @@ Section "${NAME}"
 	SetOutPath $INSTDIR
 	File "${EXE}"
 	File "${SDL}"
+	File "${LUADLL}"
 	!ifdef FLUID
 		File "${FLUIDDLL}"
 		File "${GLIBDLL}"