README added.
console color supported.
console color stack and stack backtrace added.
stabs not implemented.
grade passed.
don't understand stabs.
Merge branch 'lab1' into lab2
implement some function in pmap.c
add some comments to pmap.h
purely hand-written.
add my codeblocks project file.
I think the physical page allocator is done.
code is in page_init();
keep working, already solving bugs.
keep working.
I think check_page() is passed. great.
Lab 2 grade passed. coding style fix.
add references.
Merge branch 'lab2' into lab3