RFR: JDK-8187544 Replace BUILD_OUTPUT and OUTPUT_ROOT with OUTPUTDIR.

[Erik Joelsson]

Also a good cleanup.

In flags.m4, perhaps replace with SUPPORT_OUTPUTDIR?

/Erik


On 2017-09-14 14:14, Magnus Ihse Bursie wrote:
> Due to historical reasons, we have had two variables that points to 
> the output directory (e.g. "$topdir/build/linux-x64"), one named 
> BUILD_OUTPUT and one named OUTPUT_ROOT.
>
> First of all, these two should be unified into one.
>
> Second, it should be renamed OUTPUTDIR to better align with other 
> variables such as TOPDIR, and the various *_OUTPUTDIR variables we 
> already have.
>
> The only non-trivial part of this patch was the handling in 
> bootcycle-spec.gmk.in. I've verified that I can still build 
> bootcycle-images.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8187544
> WebRev: 
> http://cr.openjdk.java.net/~ihse/JDK-8187544-introduce-OUTPUTDIR/webrev.01
>
> /Magnus
>