dont ignore errors in the shlib subdir

http://bugs.gentoo.org/216952

--- Makefile.in
+++ Makefile.in
@@ -194,7 +194,7 @@
 
 shared:	force
 	-test -d shlib || mkdir shlib
-	-( cd shlib ; ${MAKE} ${MFLAGS} all )
+	( cd shlib ; ${MAKE} ${MFLAGS} all )
 
 documentation: force
 	-test -d doc || mkdir doc
@@ -238,7 +238,7 @@
 	-( cd shlib; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} uninstall )
 
 install-shared: installdirs install-headers shared install-doc
-	-( cd shlib ; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} install )
+	( cd shlib ; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} install )
 	
 uninstall-shared: maybe-uninstall-headers
 	-( cd shlib; ${MAKE} ${MFLAGS} DESTDIR=${DESTDIR} uninstall )