Add a provided jars list to Ant build
Add a provided jars list to Ant build

Summary:
Sometimes we want to build against stubs of things that are already
present in the system (such as Java extensions).

Reviewed By: styurin

fbshipit-source-id: 4146eae5bb

SeleniumHQ/buck,JoelMarcey/buck,JoelMarcey/buck,JoelMarcey/buck,JoelMarcey/buck,brettwooldridge/buck,rmaz/buck,rmaz/buck,facebook/buck,rmaz/buck,nguyentruongtho/buck,romanoid/buck,JoelMarcey/buck,romanoid/buck,brettwooldridge/buck,facebook/buck,JoelMarcey/buck,brettwooldridge/buck,brettwooldridge/buck,facebook/buck,SeleniumHQ/buck,SeleniumHQ/buck,Addepar/buck,Addepar/buck,JoelMarcey/buck,zpao/buck,SeleniumHQ/buck,JoelMarcey/buck,romanoid/buck,Addepar/buck,rmaz/buck,kageiit/buck,romanoid/buck,JoelMarcey/buck,facebook/buck,Addepar/buck,JoelMarcey/buck,Addepar/buck,kageiit/buck,JoelMarcey/buck,kageiit/buck,zpao/buck,SeleniumHQ/buck,zpao/buck,kageiit/buck,kageiit/buck,SeleniumHQ/buck,brettwooldridge/buck,Addepar/buck,SeleniumHQ/buck,brettwooldridge/buck,brettwooldridge/buck,rmaz/buck,zpao/buck,Addepar/buck,facebook/buck,romanoid/buck,facebook/buck,rmaz/buck,kageiit/buck,romanoid/buck,brettwooldridge/buck,zpao/buck,nguyentruongtho/buck,SeleniumHQ/buck,nguyentruongtho/buck,romanoid/buck,rmaz/buck,zpao/buck,romanoid/buck,Addepar/buck,nguyentruongtho/buck,nguyentruongtho/buck,Addepar/buck,rmaz/buck,Addepar/buck,brettwooldridge/buck,Addepar/buck,SeleniumHQ/buck,romanoid/buck,JoelMarcey/buck,zpao/buck,facebook/buck,nguyentruongtho/buck,brettwooldridge/buck,brettwooldridge/buck,JoelMarcey/buck,SeleniumHQ/buck,romanoid/buck,SeleniumHQ/buck,nguyentruongtho/buck,kageiit/buck,rmaz/buck,rmaz/buck,Addepar/buck,brettwooldridge/buck,Addepar/buck,SeleniumHQ/buck,rmaz/buck,SeleniumHQ/buck,romanoid/buck,rmaz/buck,romanoid/buck,brettwooldridge/buck,romanoid/buck,rmaz/buck