Fix MP_HINT_EXT_8 handling in mp_check
Fix exmaple in doxygen documentation
Implement mp_encode() - printf()-like formatter for MsgPack
added mp_vformat function
added forgotten line
add __packed option to make armcc compiler happy with unaligned address of int/float/double
Refactoring: extract mp_load_*/mp_store_* functions
Fix regression after refactoring
enable gcc to deal with unaligned address of int/float/double