update CMakeLists.txt to support `make test`
use InputSource object
add stub code for bytecode loader
bug fixed in main.c. use syntax_file for syntax file
added bytecode's opcode
add InputSource_GetUint8, InputSource_GetUint32
added bytecode dumper
fix ndata's endian
Merge pull request #5 from imasahiro/bytecodeloader

add stub code for BytecodeLoader