RPM macros are moved from /etc to /usr, in the sprit of moving
in the direction of empty /etc.
RPM gained support for the new directory recently, in v. 4.10.90:
https://bugzilla.redhat.com/show_bug.cgi?id=846679.
pkgconfiglibdir=$(libdir)/pkgconfig
polkitpolicydir=$(datadir)/polkit-1/actions
bashcompletiondir=@bashcompletiondir@
-rpmmacrosdir=$(sysconfdir)/rpm
+rpmmacrosdir=$(prefix)/lib/rpm/macros.d
sysvinitdir=$(SYSTEM_SYSVINIT_PATH)
sysvrcnddir=$(SYSTEM_SYSVRCND_PATH)
varlogdir=$(localstatedir)/log