RFR: 8021430: 64 bit JDK build fails on windows 7 due to missing corba source files

[Tim Bell]

Hi Erik:

> Please review this small fix for build failures on windows that were 
> reported a couple of times recently. The abspath function in make 
> sometimes garbles its output. In this case, the function call was a 
> legacy leftover and no longer needed. Solution is to simply remove them.
>
> http://cr.openjdk.java.net/~erikj/8021430/webrev.root.01

Looks good to me.

Tim