Repro-Build: Investigate what essential dependency versions are required for a reproducible x64Linux jdk build

[andrew-m-leonard]

Current reproducible build work has achieved identical JDK images when built on separate x64Linux machines, but using the exact same adoptopenjdk/centos6_build_image.
To better define the BoM's for our binaries and thus achieve reproducibility of binaries by other parties, we would like to determine the "set" of dependencies to achieve indentical JDK images on two separate x64Linux machines. eg:

• gcc 7.5.0
• autoconf 6.9
• cups
• zlib
• fontconfig
• X11
• tooling like strip, zip, flock, dtrace, gmake
  Some dependencies probably don't impact reproducibility, eg.wget, curl

A good source of what dependencies and tooling requirements building openjdk has see ref: https://openjdk.java.net/groups/build/doc/building.html

[andrew-m-leonard]

First attempt at this for a single native library: #2813