[PATCH v2 0/4] meson: add corresponding target for Makefile's hdr-check

To bridge the remaining gaps between Makefile and meson, this patch series adds 'hdr-check' to meson to compliment the Makefile's 'hdr-check'.

We also introduce 'headers-check' as an alias to 'hdr-check' as a better named replacement in both meson and make and add a note to deprecate 'hdr-check' in the future.

The first two commits are small cleanups, where we re-organize existing variables to make it easier to add the target. The third commit adds the 'hdr-check' target to meson. The last commit introduces the 'headers-check' alias to both meson and the makefile and marks 'hdr-check' to be deprecated.

This is based on master 9d22ac5122 (The third batch, 2025-04-07) with 'es/meson-build-skip-coccinelle' merged in.

---
Changes in v2:
- Add 'hdr-check' to meson, while introducing 'headers-check' as 
  a replacement alias. Schedule 'hdr-check' to be deprecated in the future.
- Link to v1: https://lore.kernel.org/r/20250408-505-wire-up-sparse-via-meson-v1-0-17476e5cea3f@gmail.com

---
 Makefile                       |   4 +-
 ci/run-static-analysis.sh      |   2 +-
 contrib/coccinelle/meson.build |  29 +++------
 meson.build                    | 131 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 142 insertions(+), 24 deletions(-)

Karthik Nayak (4):
      coccinelle: meson: rename variables to be more specific
      meson: move headers definition from 'contrib/coccinelle'
      meson: add support for 'hdr-check'
      makefile/meson: add 'headers-check' as alias for 'hdr-check'

Range-diff versus v1:

1:  aed80c7868 = 1:  c6493671b5 coccinelle: meson: rename variables to be more specific
2:  cf2a8c50c2 = 2:  33e9b21bae meson: move headers definition from 'contrib/coccinelle'
3:  938aac6573 ! 3:  b6be631165 meson: add support for 'headers-check'
    @@ Metadata
     Author: Karthik Nayak <karthik.188@gmail.com>
     
      ## Commit message ##
    -    meson: add support for 'headers-check'
    +    meson: add support for 'hdr-check'
     
         The Makefile supports a target called 'hdr-check', which checks if
         individual header files can be independently compiled. Let's port this
    -    functionality to meson, our new build system too.
    -
    -    Let's avoid the abbreviation and name the target 'headers-check', which
    -    is easier to read.
    -
    -    The implementation resembles that of the Makefile and provides the same
    -    check.
    +    functionality to meson, our new build system too. The implementation
    +    resembles that of the Makefile and provides the same check.
     
         Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
     
    @@ meson.build: endif
     +    hco_targets += hco
     +  endforeach
     +
    -+  alias_target('headers-check', hco_targets)
    ++  alias_target('hdr-check', hco_targets)
     +endif
     +
      foreach key, value : {
-:  ---------- > 4:  d265cd97df makefile/meson: add 'headers-check' as alias for 'hdr-check'

base-commit: 3a956c5f69873611ae5f8dcb9acd117f66b95ddc change-id: 20250330-505-wire-up-sparse-via-meson-2e32dd31208b

Thanks
- Karthik