add output stream interface to stream.h
make stream interface support bidirectional I/O, update calling code
missing initializer in stream.h
add replacement libc functionality
only include stdio if we have tracing enabled
add number -> string format functions
remove unneeded headers
de-inline stream member functions, add putstr and putcomp vararg convenience functions
add fdsteam implementation
"subclass" stream object instead of compose to make initialization easier to do
use new bufstream initialization interface
switch from unsigned to signed char for string input
switch token from using stdio to stream interface for output
begin using libc_custom
add stream object to build targets
have tokenize_test start using fdstream for output
Add global stream object ptrs for stdin, stdout, stderr; add static stream obj initializer.
remove some libc dependencies from token
fix broken strtoll_custom
readme update
use bzero_custom libc to replace memset in eval.c
new stream interfaces and string formatting function names
minor cleanups in strtoll_custom
minor formatting function name change
add fmt_ptr
begin incorporating stream API into node layer