build: Move symbolic link to -devel package, keep .spec file in distributions.

Patch submitted by Andrew Schorr <schorr@te....>.

Makefile.in

@@ -66,7 +66,6 @@ distribution: clean
 	rm -f include/ck_md.h
 	rm -f build/regressions.build
 	rm -f build/ck.build
-	rm -f build/ck.spec
 	rm -f build/ck.pc
 	rm -f Makefile
 	rm -f doc/Makefile

build/ck.spec.in

@@ -53,12 +53,12 @@ rm -rf $RPM_BUILD_ROOT
 
 %files
 %defattr(-,root,root,-)
-%{_libdir}/libck.so
 %{_libdir}/libck.so.@VERSION@
 %{_libdir}/libck.so.@VERSION_MAJOR@
 
 %files devel
 %defattr(-,root,root)
+%{_libdir}/libck.so
 %{_includedir}/%{name}/*.h
 %{_includedir}/%{name}/*/*.h
 %{_includedir}/%{name}/*/*/*.h