Revisions of fltk1.3 (3)

Han Gao Han Gao (revy) committed about 2 years ago (revision 3)
Remove old source
Han Gao Han Gao (revy) committed about 2 years ago (revision 2)
Upload deepin-riscv-stage2 source
Han Gao Han Gao (revy) committed about 2 years ago (revision 1)
Upload deepin-riscv-stage2 source