JimEvans: Hacking copy_to_prebuilt in files.rb to allow for differing paths for source and destination prebuilts for tasks that do not use the crazy-fun grammar. This should only affect the creation of libwebdriver-firefox.so.
JimEvans: Hacking copy_to_prebuilt in files.rb to allow for differing paths for source and destination prebuilts for tasks that do not use the crazy-fun grammar. This should only affect the creation of libwebdriver-firefox.so.

git-svn-id: aa1aa1384423cb28c2b1e29129bb3a91de1d9196@10989 07704840-8298-11de-bf8c-fd130f914ac9

jmt4/Selenium2,jmt4/Selenium2,yumingjuan/selenium,jmt4/Selenium2,jmt4/Selenium2,yumingjuan/selenium,jmt4/Selenium2,yumingjuan/selenium,yumingjuan/selenium,yumingjuan/selenium,jmt4/Selenium2,jmt4/Selenium2,jmt4/Selenium2,yumingjuan/selenium,yumingjuan/selenium,yumingjuan/selenium,jmt4/Selenium2,yumingjuan/selenium