RFR: 8209784: Include hsdis in the JDK [v2]

[Magnus Ihse Bursie]

> This PR adds a new configure argument, `--enable-hsdis-bundling`. Setting this, together with a valid backend using `--with-hsdis`, will bundle the generated hsdis library with the JDK.
> 
> The PR also includes a refactoring of the hsdis handling in autoconf, breaking it out to a separate file `lib-hsdis.gmk`, and breaking the functionality up in separate functions per backend.

Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:

  Somehow the tabs got converted to spaces

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7578/files
  - new: https://git.openjdk.java.net/jdk/pull/7578/files/0f19696e..6839f911

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7578&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7578&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7578.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7578/head:pull/7578

PR: https://git.openjdk.java.net/jdk/pull/7578