RFR: JDK-8269031: linux x86_64 check for binutils 2.25 or higher after 8265783 [v2]

[Matthias Baesken]

> This change adds a check for binutils 2.25 or higher after 8265783. The change 8265783 introduced on linux x86_64 a minimum requirement for binutils : "Minimum required would be binutils 2.25 where AVX512 support was added for Skylake."  (see https://bugs.openjdk.java.net/browse/JDK-8265783 )
> I adjusted the existing check that already checked the binutils version by looking at the linker output (we do not look at the assembler version and it seems to me we do not really invoke the assembler directly, just indirectly via gcc).

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  Add comment about as version

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4548/files
  - new: https://git.openjdk.java.net/jdk/pull/4548/files/b52c324e..80f33544

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4548&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4548&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4548.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4548/head:pull/4548

PR: https://git.openjdk.java.net/jdk/pull/4548