RFR: 8284661: Reproducible assembly builds without relative linking

[Andrew Leonard]

This PR removes the need for relative object file linking introduced by JDK-8284437 for linux libraries, by specifying
.file <relative source path> directives in the linux .S source files. The source files specify a .file ASSEMBLY_SRC_FILE
where ASSEMBLY_SRC_FILE is defined by the NativeCompliation.gmk.

Signed-off-by: Andrew Leonard <anleonar at redhat.com>

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Commit messages:
 - 8284661: Reproducible assembly builds without relative linking

Changes: https://git.openjdk.java.net/jdk/pull/8177/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8177&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8284661
  Stats: 32 lines in 7 files changed: 15 ins; 13 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8177.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8177/head:pull/8177

PR: https://git.openjdk.java.net/jdk/pull/8177