added hello.nasm
added proper debugging support (gcc -g); moved environ to the lib__xtiny.a
added doc TODO
added TODO
added missing sections, asserts and /DISCARD/ to xtiny.scr
added more __ to xtiny.h
fixed __xtiny_environ in _start.s
added assembly implementation of some string functions
added -D__XTINY__
fixed include processing
removed __attribute__((__leaf__)) when compiling with clang
added clang support; added --xtiny-link for omitting system -L directories
added TODO
added clang -Qunused-arguments
extended the README