Request for review: 7112308 Fix Visual Studio build for precompiled header

[Rickard Bäckman]

Hi All,

my move of the precompiled header broke the project file creation for 
Visual Studio. Here is a small fix to the problem:

7112308: Fix Visual Studio build for precompiled header
http://cr.openjdk.java.net/~rbackman/7112308/

Thanks
Rickard