heads-up: required ant version is now 1.10.2 or higher

[Rick Hillegas]

My latest checkin (1826764, derby-6945-23-aa-upgradeToAnt_1.10.2.diff) 
has upgraded the build script to require Ant 1.10.2 or higher. Sorry for 
any inconvenience that this may cause.

Thanks,
-Rick