[8u] RFR(XS): 8233880: Support compilers with multi-digit major version numbers

[Florian Weimer]

* Severin Gehwolf:

> Thanks for the review! Yes, generated-configure.sh changes are due to
> version skew of autoconf being used. I'll try to generate configure on
> an older machine so as to avoid this before pushing. Does that sound
> ok?

THe runstatedir changes come and go (even in the jdk8u-dev history),
depending on whether Debian's autoconf is used, which patches its
autoconf 2.69 build to handle runstatedir.  There hasn't been an
autoconf upstream release in many, many years, so going back to older
versions will not solve this.  If you want to avoid this change, you
either have to use Debian's autoconf, or back it out manually.

Thanks,
Florian