libsm: fix install.
libsm: fix install.

nielx/haikuports,moochris/haikuports,moochris/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,haikuports/haikuports,moochris/haikuports,nielx/haikuports,nielx/haikuports