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Install sys/<arch>/include/pc/*.h to /usr/include/machine/pc/. PR: docs/29534 Install sys/netatm/*/*.h to /usr/include/netatm/*/. Don't install compatibility symlinks for <machine/soundcard.h> and <machine/joystick.h>. Three years is enough to be aware of the change, and these weren't visible in the SHARED=symlinks case. Back out include/Makefile,v 1.160 that was a null change anyway due to the bug in the path, and we now don't want to install these headers because they would otherwise be invisible in the SHARED=symlinks case. Don't install IPFILTER headers. Userland utilities fetch them directly, and they were not visible in the SHARED=symlinks case. Resurrect SHARED=symlinks in Makefile.inc1. PR: bin/28002 Prodded by: bde MFC after: 2 weeks