RFR (S): 8217328: Rename CollectionSetChooser to G1CollectionSetChooser

[Thomas Schatzl]

Hi all,

  can I have reviews for this simple rename of CollectionSetChooser to
G1CollectionSetChooser to have it adhere to naming guidelines?

This only contains renames of the files and the class.

CR:
https://bugs.openjdk.java.net/browse/JDK-8217328
Webrev:
http://cr.openjdk.java.net/~tschatzl/8217328/webrev/
Testing:
local compilation

Thanks,
  Thomas