Update metadata for 3.17.2
Bump meta files to 3.17.2-rc-1.
Update HISTORY files with correct version.
Bump package and bower to 3.17.1-rc-1
Update bower and package json versions to 3.17.0-rc-1
Build: yui3-2026
Build: yui3-1932
Removed extra copy of Simple.swf
yui3-1548
yui3-1160