Create SDK

	This is the first sdk source.
by wu pengfei.
Add Makefile for comment

	xixi by wpf for test.
Branch libraries

	Modify Makefile
Makefile add by master

This is a test for branch.
Merge branch 'sdk_more_libraries'

Conflicts:
	Makefile
Mergebywpf
hello
Modify Makefile

Remove some comment with # start.
Modify Makefile
Add a line for comment by wpf.
Add comment in Makefile
this is a test for branch by wpf.
merge b1 to master by wpf
Merge branch 'b1'
add commment in master by wpf
hellohaha
add comment in b2
this is a test
Add comment in b2

b2 2
add b1
b1
add b2222
b2222
add b2222222
b2222222
add b21
add
add
addbywpf
Merge branch 'b2' into b1

Conflicts:
	Makefile