RFR (S): 8221880: Better customization for Windows RC properties FileDescription and ProductName

[Langer, Christoph]

Hi,

In our downstream build, I'd like to be able to set/customize the value for the Windows RC properties "ProductName" and "FileDescription" via the version-numbers file. These values manifest in Windows executable properties.

During the build ProductName gets set to "OpenJDK Platform 13" and FileDescription will be "OpenJDK Platform binary". This value is obtained by concatenating \$(PRODUCT_NAME) \$(JDK_RC_PLATFORM_NAME) in flags-other.m4. Both variables get set in version-numbers. So, if I was to customize the properties, I could change PRODUCT_NAME and JDK_RC_PLATFORM_NAME in version-numbers. However, modifying the former is no good idea since it is used ubiquitously and has unwanted side effects. On the other hand, I could make an adaption to flags-other.m4, but that diff would be hidden and not in a central place where I'd expect such customizing diffs.

So, please review this small fix, which allows for modifying these RC properties in version-numbers. The default behavior won't be changed.

Bug: https://bugs.openjdk.java.net/browse/JDK-8221880
Webrev: http://cr.openjdk.java.net/~clanger/webrevs/8221880.0/

Thanks
Christoph