Rebuild against current db.
Remove unneeded zlib dependency.

This reverts commit c9c33d0f.

Downgrading the db support requires users to recreate their databases.
As pointed out in
#3
we likely want to just completely remove the db support instead.

Fixes #2

Add license files also to split packages.

Following /usr/share/doc/postfix/DB_README we are extending the `CCARGS`
and `AUXLIBS` environment variables to build and link against db5.3
instead of db.

Fixes #1



Signed-off-by: David Runge <dvzrv@archlinux.org>

This reverts commit 97d9cd64.

The included patch has no effect on the linking strategy of the build.
The build system of postfix is unfortunately overly complicated for no
reason and other link flags need to be handed in over `AUXLIBS` and
header include locations via `CCARGS`.

Fixes #1.

Signed-off-by: David Runge <dvzrv@archlinux.org>

Signed-off-by: David Runge <dvzrv@archlinux.org>

Remove now included patch for linux >= 6.
Add make options to a local array for better readability.
Expand all depends array to be one line per entry.

devtools 20230105-1 enables the debug option by default.

A follow-up commit will remove debug from alongside other options.

archlinux/devtools!109 (comment 74475)

Remove unneeded quotes and curly braces.

Link against libpcre2-8.so (not libpcre2-32.so).
https://bugs.archlinux.org/task/73656.

Replace pcre with pcre2.
Simplify installation of files for split packages.

Simplify quoting in file.

Install additional auxiliary script (and accompanying documentation).
Fix pkgdesc of split packages.

Replace libnsl with libnsl.so in depends for postfix.