Rename old README to LINUX-README
Add new README to describe workflow.
This is a empty commit in order to illustrate the workflow.

I (Hang) push it to my personal account and send the pull request.
You (Baiqin and Pindan) are responsible to review it and merge it into 3Legs/dev.
Merge pull request #1 from Bankq/dev

This is a empty commit in order to illustrate the workflow.
Registered set_colors and get_colors syscall
	modified:   arch/x86/include/asm/unistd_32.h
	modified:   arch/x86/kernel/syscall_table_32.S
Add color field to task_struct and initialized.

1. add u_int16_t color to task_struct.
2. initialize color to it's parent's color;
3. register system calls.
4. add compile target to Makefile.

	modified:   include/linux/sched.h
	modified:   include/linux/syscalls.h
	modified:   kernel/Makefile
	modified:   kernel/fork.c
Merge branch 'dev' of https://github.com/3Legs/hw2 into bq
Merge pull request #2 from gallantman/dev

Color init.
color.c added
Merge branch 'dev' of https://github.com/3Legs/hw2 into dev
Change color init to init_task.h
	modified:   include/linux/init_task.h
	modified:   kernel/fork.c
First version of get_colors syscall done. No locking yet.
	modified:   kernel/color.c
Add test program getcolors. Add Makefile to cross-compile
	new file:   test/Makefile
	new file:   test/getcolors.c
Fixed bug and add lock in get_colors.
	modified:   kernel/color.c
set_colors first version.

1. Can not assign color to threads.
2. No privilege check.

	modified:   kernel/color.c
User privilege check done.

Check if user's effective id is root (root user or sudo );

	modified:   kernel/color.c
Threads' set_colors done.

	modified:   kernel/color.c
Clean up unecessary header files.
	modified:   kernel/color.c
Vfork now doesn't propagate color.

1. Check if CLONE_VFORK flag is set in do_fork(). If set, we set color back to original value 0.
2. Delete obselete comments.

	modified:   kernel/fork.c
Register syscall for ARM

	modified:   arch/arm/include/asm/unistd.h
	modified:   arch/arm/kernel/calls.S
Fix bug in thread coloring.

Instead of loop from input pid, we found the group leader first and loop around it to color all threads belong to the same group.

	modified:   kernel/color.c