added some gitignore
fixed includes for Buffer and FileStream
fix FileStream::writeUint16()
added CFLAGS to Makefile
fixed VGM reader to store zero offsets as zero
fixed VGM writer, added writePSGTone()
improved vgmtest - makes a simple counterpoint with the SN76489
VGMWriter fix (eof offset)
simplified mdxstat output
added mdxdump
clean up Makefile, add mdxdump
MDX: make properties protected, add some more properties, add a handleHeader() Callback
move MDX dump code to MDXDumper class
more gitignore
started MDXVGM