[PATCH, testsuite]: Fix detection of -j make argument

[Marc Glisse]

On Tue, 22 Nov 2016, Uros Bizjak wrote:

> New makes (e.g. GNU Make 4.2.1) pass -j argument in MFLAGS is a
> different way. While older makes pass only "-j", newer makes pass e.g.
> "-j4" when -j is specified on the command line. The detection of "-j"
> make argument doesn't work in the later case.
>
> Attached patch reworks this functionality to detect -j correctly in all cases.

Hello,

I didn't read the patch, but do you think this also fixes PR 53155 ?

-- 
Marc Glisse