nginx: fix broken proxy_pass feature
nginx: fix broken proxy_pass feature

[NGINX ticket #748 - https://trac.nginx.org/nginx/ticket/748]

Accoriding to #748 or https://github.com/archlinuxarm/PKGBUILDs/issues/1161,
respectively, proxy_pass is broken on some architectures without position
independent code.

The solution is adding -fPIE -pie as build flags.

Signed-off-by: Jens Rehsack <69d49c504a9219a55b8be0f905e8fe3c32ffb57f@netbsd.org>
Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

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