RFR: 8364037: Sort share includes: adlc, libadt, metaprogramming

[Francesco Andreuzzi]

This PR sorts includes using test/hotspot/jtreg/sources/SortIncludes.java in:
- hotspot/share/adlc 
- hotspot/share/libadt
- hotspot/share/metaprogramming

I noticed some missing includes in several header files in`adlc/`, which caused compilation success to be dependent on the order of include statements in `adlc.hpp`. I moved the include statements to `adlparse.hpp` and `forms.hpp`.

I'm also adding the directory to TestIncludesAreSorted.java.

Passes tier1.

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Commit messages:
 - move comment
 - sort

Changes: https://git.openjdk.org/jdk/pull/26460/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=26460&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8364037
  Stats: 30 lines in 6 files changed: 17 ins; 12 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/26460.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26460/head:pull/26460

PR: https://git.openjdk.org/jdk/pull/26460