RFR: JDK-8058631 Rename posix to unix in build system to match file name changes

[Magnus Ihse Bursie]

On 2014-09-24 14:39, Magnus Ihse Bursie wrote:
> After Jigsaw M1, there is a new common "unix" directory structure. We 
> have used "posix" in the build system for the same purpose, but this 
> leads to unnecessary conversations. Instead, we should use "unix" all 
> way through in the build system.
>
> Also, this means that OS_API is slightly misleading -- we're not 
> actually checking for an API such as POSIX, but the general category 
> of OSes. I'll rename the *_OS_API to *_OS_TYPE instead. The "winapi" 
> OS_API was never used, and is removed -- we only need to check for 
> "windows", there's no need to introduce an abstract "winapi" category.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8058631
> WebRev: 
> http://cr.openjdk.java.net/~ihse/JDK-8058631-rename-posix-to-unix/webrev.01

This fix got stuck far down the priority list...

It was pointed out to me that OS_API_SRC_DIRS should change name as 
well, to match OS_TYPE. This updated webrev contain that fix. I have 
also double-checked that no other name changes are needed to keep the 
code consistent.

Updated webrev:
http://cr.openjdk.java.net/~ihse/JDK-8058631-rename-posix-to-unix/webrev.02/

/Magnus