Allows targets such as prepare, refresh, or update to be run without
building dependencies for easier patch maintenance.

This is d741a64b7 applied to php8.

Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: Michael Heimpold <mhei@heimpold.de>

This fixes:
  - CVE-2021-21702

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

The build process uses a minilua helper for code generation
which must not be compiled with target cross-compiler but
the host compiler.

This error was spotted by buildbots:
ext/opcache/minilua /builder/shared-workdir/build/sdk/build_dir/
 target-x86_64_musl/php-8.0.1/ext/opcache/jit/dynasm/dynasm.lua
 -D X64=1 -o ext/opcache/jit/zend_jit_x86.c /builder/shared-workdir
 /build/sdk/build_dir/target-x86_64_musl/php-8.0.1/ext/opcache/jit/zend_jit_x86.dasc
/bin/bash: ext/opcache/minilua: No such file or directory
Makefile:406: recipe for target 'ext/opcache/jit/zend_jit_x86.c' failed
make[4]: *** [ext/opcache/jit/zend_jit_x86.c] Error 127

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

Signed-off-by: Michael Heimpold <mhei@heimpold.de>