install: install rpm macros if RPM bin in system. Closes #56
install: install rpm macros if RPM bin in system. Closes #56

Signed-off-by: Igor Gnatenko <c869b0bfe2cf1da26c2efd33f6d6d74ddcbbdd2b@gmail.com>

rhd/meson,ernestask/meson,DragoonX6/meson,ernestask/meson,centricular/meson,centricular/meson,QuLogic/meson,trhd/meson,aaronp24/meson,pexip/meson,yuhangwang/meson,evgenyz/meson,mesonbuild/meson,pexip/meson,wberrier/meson,winksaville/meson,mesonbuild/meson,byon/meson,rhd/meson,aaronp24/meson,centricular/meson,fmuellner/meson,jpakkane/meson,trhd/meson,ernestask/meson,amaniak/meson,germandiagogomez/meson,germandiagogomez/meson,aaronp24/meson,aaronp24/meson,wberrier/meson,winksaville/meson,becm/meson,QuLogic/meson,yuhangwang/meson,jpakkane/meson,evgenyz/meson,fmuellner/meson,jeandet/meson,jpakkane/meson,byon/meson,rhd/meson,thiblahute/meson,thiblahute/meson,QuLogic/meson,thiblahute/meson,becm/meson,jroivas/meson,mesonbuild/meson,QuLogic/meson,MathieuDuponchelle/meson,centricular/meson,MathieuDuponchelle/meson,centricular/meson,yuhangwang/meson,centricular/meson,MathieuDuponchelle/meson,amaniak/meson,becm/meson,jroivas/meson,byon/meson,MathieuDuponchelle/meson,winksaville/meson,trhd/meson,jroivas/meson,jeandet/meson,amaniak/meson,winksaville/meson,DragoonX6/meson,ernestask/meson,DragoonX6/meson,MathieuDuponchelle/meson,thiblahute/meson,jeandet/meson,DragoonX6/meson,aaronp24/meson,trhd/meson,thiblahute/meson,pexip/meson,ernestask/meson,jeandet/meson,MathieuDuponchelle/meson,mesonbuild/meson,rhd/meson,germandiagogomez/meson,wberrier/meson,fmuellner/meson,winksaville/meson,amaniak/meson,mesonbuild/meson,fmuellner/meson,ernestask/meson,becm/meson,germandiagogomez/meson,aaronp24/meson,trhd/meson,becm/meson,germandiagogomez/meson,rhd/meson,fmuellner/meson,rhd/meson,evgenyz/meson,jroivas/meson,mesonbuild/meson,jroivas/meson,QuLogic/meson,byon/meson,jpakkane/meson,germandiagogomez/meson,evgenyz/meson,aaronp24/meson,fmuellner/meson,mesonbuild/meson,wberrier/meson,wberrier/meson,thiblahute/meson,centricular/meson,aaronp24/meson,wberrier/meson,pexip/meson,mesonbuild/meson,MathieuDuponchelle/meson,jeandet/meson,yuhangwang/meson,amaniak/meson,becm/meson,rhd/meson,evgenyz/meson,ernestask/meson,QuLogic/meson,winksaville/meson,jpakkane/meson,fmuellner/meson,germandiagogomez/meson,mesonbuild/meson,QuLogic/meson,mesonbuild/meson,jpakkane/meson,trhd/meson,QuLogic/meson,pexip/meson,rhd/meson,jpakkane/meson,yuhangwang/meson,becm/meson,evgenyz/meson,becm/meson,jeandet/meson,amaniak/meson,yuhangwang/meson,thiblahute/meson,jpakkane/meson,trhd/meson,becm/meson,aaronp24/meson,yuhangwang/meson,jpakkane/meson,evgenyz/meson,QuLogic/meson,amaniak/meson,jeandet/meson,pexip/meson,fmuellner/meson,trhd/meson,DragoonX6/meson,winksaville/meson,byon/meson,wberrier/meson,jeandet/meson,fmuellner/meson,byon/meson,byon/meson,MathieuDuponchelle/meson,winksaville/meson,pexip/meson,ernestask/meson,wberrier/meson,centricular/meson,jeandet/meson,jroivas/meson,trhd/meson,jroivas/meson,MathieuDuponchelle/meson,thiblahute/meson,pexip/meson,becm/meson,pexip/meson,DragoonX6/meson,pexip/meson,ernestask/meson,DragoonX6/meson,thiblahute/meson