Adding --headerbyte support in speexdec.c
Adding --headerbyte support in speexdec.c

QXIP/Speex-with-header-bytes,chengjunjian/Speex-with-header-bytes,QXIP/Speex-with-header-bytes,chengjunjian/Speex-with-header-bytes,chengjunjian/Speex-with-header-bytes,chengjunjian/Speex-with-header-bytes,QXIP/Speex-with-header-bytes