bunch of fixes/changes to make packages build

[henderkes]

What does this PR do?

coming later...

[crazywhalecc]

Use it externally in v2: bin/spc build --build-cli bcmath -P a.php

// a.php
if (preg_match('/after-library\[(.*)\]-build/', patch_point(), $match)) {
    $lib_name = $match[1];
    FileSystem::removeDir(SOURCE_PATH . '/' . $lib_name);
}

v3 will mark this as deprecated, using #BeforeStage and #AfterStage attribute instead. But removal will be performed in v4 (will be a long time)

[henderkes]

That's not working FYI.

[henderkes]

I'm silly. Forgot <?php...

[henderkes]

Swoole fails with 8.5.1 despite the patch.

Libwebp fails on alma 8 despite the check succeeding...

And I need another vacation. The composer update before push failed because it failed to remove go package stuff in pkgroot. The bugs actually seem fixed.