update .gitgnore
add bootstrap for autoreconf
Generate pkgconfig info
rename decoder_sys to arib_parser
add build warnings
add decoder new/free
add arib_parser typedef
add arib_parser new/free
parser: remove unused members
don't hold reference to constdata as member
pass drcs basedir as parser creation time

will be conditonal switch for loading drcs data
load drcs as parser creation time
dont allocate unused reads
do better abstraction
make parser struct private
return zero terminated string on decoding
uniformize buffer sizes
fix size for subtitle data
add parser_get_data
make decoder structs private