Remove build.mk usage

First step when creating the `configure` script is currently using
make. This is helpful when developing buildsystem to only rebuild
`configure` and `main/php_c

Remove build.mk usage

First step when creating the `configure` script is currently using
make. This is helpful when developing buildsystem to only rebuild
`configure` and `main/php_config.h.in` files when one of the *.m4
or configure.ac file changes and saves the developer time a little.

Realistically however, it is not needed that much considering the
times of several seconds to fully rebuild the configure script and
configuration header. The next step when running the `configure`
script is much more time consuming so performance on buildconf
level is a bit questionable and won't be noticed on today's
systems.

Additionally:
- buildconf now removes cache and all targets and uses -f option on
the first step i.e. autoconf. The autoheader does not need the -f
option in this case.

Closes GH-4437

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Extend wildcard files section in EditorConfig [ci skip]

Changes:
- Trim trailing whitespace for all files except patches. There isn't
really any practical reason to not trim the tr

Extend wildcard files section in EditorConfig [ci skip]

Changes:
- Trim trailing whitespace for all files except patches. There isn't
really any practical reason to not trim the trailing whitespace in all
other files. Binary files or phpt files that include trailing
whitespace as part of the test should be manually set in editors/IDEs
or by disabling the editorconfig for particular editing.
- Add *.ac, *.d, *.l, *.skl, *.re, *.wsdl, *.dtd, *.html, *.rng, *.xml,
*.xsd, *.xsl, buildconf, and Makefile* files settings.

Closes #4156

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Update editorconfig

Changes:
- New property max_line_length
- COMMIT_EDITMSG file added when writing commit messages
- Markdown files can have trimmed trailing whitespace also to

Update editorconfig

Changes:
- New property max_line_length
- COMMIT_EDITMSG file added when writing commit messages
- Markdown files can have trimmed trailing whitespace also to simplify
settings.
- https link used to EditorConfig page.
- Added also *.y, *.cpp, and *.inc files
- The tab_width moved to a new all files section

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Update .editorconfig with some more configs

Added support for .awk, .w32, .bat, .mk, .frag, .m4, .sh, .php, .phpt,
and Markdown files based on the current most used coding style in the

Update .editorconfig with some more configs

Added support for .awk, .w32, .bat, .mk, .frag, .m4, .sh, .php, .phpt,
and Markdown files based on the current most used coding style in the
php-src repository.

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Limit editorconfig to C code

PHPT files do not follow this.

[ci skip]

Added editorconfig file