Hello Troy,
The source code for the AdWords API Java client library is available
from
http://code.google.com/p/google-api-adwords-java/source/checkout
If you do find something that you need to change and it's backwards
compatible with older versions of Axis, you could file a bug about it
at
http://code.google.com/p/google-api-adwords-java/issues/list
and it may make it in to the next patch release.
Alternatively, if you need to use the AdWords API from a specific
version of Axis you can just generate SOAP stub libraries yourself
from Axis based on our WSDL definitions (this is what the client
library does under the hood). You'd miss out on some of the nice
features of the client library, like its logging and the way it
handles credentials, though.
Cheers,
-Jeff Posnick, AdWords API Team