support kissy1.4 ie7
Merge pull request #87 from zengyue/uploader

modify default flash path
merge uploader
uploader comments
fixed bug #89,#90
fixed bug of #88
add absolute layout
fixed bug #91,#92,#93
add subversion
add cancel selected support #94
group valid #95
修复flash上传路径的问题和获取扩展名的问题