RFR: 8226325: Support building of filtered spec bundles

[Erik Joelsson]

Hello Dan,

Please at least add a comment above SPEC_FILTER explaining how it can be 
used and the format it accepts.

Docs.gmk:492: I would recommend breaking after the =. We generally do 
this for (at least) multi-line macro definitions to make them stand out 
more. See make/common/Utils.gmk for examples.

691-693: Please indent properly (4 spaces).

Nice that you found a way to get rid of the SPECS_BOTTOM_FILE_$n files, 
those were an annoying construct. Looks good except for the style nits!

/Erik

On 2019-06-18 16:05, Dan Smith wrote:
> See this webrev for some enhancements to the documentation-building capabilities of the build system.
>
> http://cr.openjdk.java.net/~dlsmith/jdk/8226325/webrev.00 <http://cr.openjdk.java.net/~dlsmith/jdk/8226325/webrev.00>
>