RFR: 7151898: Check for LANG in Mac OS X jdk build sanity check [macosx]

[Fredrik Öhrström]

----- stuart.marks at oracle.com skrev:

> I don't know, and I don't have the expertise in the build system to
> know how other LANG settings would affect the build. Perhaps somebody else on
> build-dev knows. Meanwhile, we're patching things up this way, even though it
> makes things a bit messier.

If you had built the new build-infra/jdk8 tree, you would have noticed
that it does not require you to set LANG=C
It should work with any locale, I use my default setting LANG=sv_SE.UTF-8

The reason LANG=C is necessary for the old makefiles is because
in very few places in the makefiles, tr,date,sort and some other cli tools, 
are used in such a way that is dependent on the locale. Also 
these commands generate Java source or other settings which cause the 
actual error message to appear much later, and it takes a bit of time 
to track it back to the original cause, which is in fact trivial to fix.

//Fredrik