add missing root files entry for solaris.gtk.sparc
diff --git a/features/org.eclipse.rcp/build.properties b/features/org.eclipse.rcp/build.properties
index 0e44734..3be24f2 100644
--- a/features/org.eclipse.rcp/build.properties
+++ b/features/org.eclipse.rcp/build.properties
@@ -21,6 +21,8 @@
 
 root.solaris.motif.sparc=../../features/org.eclipse.platform.launchers/bin/motif/solaris/sparc
 
+root.solaris.gtk.sparc=../../features/org.eclipse.platform.launchers/bin/gtk/solaris/sparc
+
 root.linux.gtk.x86=../../features/org.eclipse.platform/about_files/linux.gtk.x86,../../features/org.eclipse.platform.launchers/bin/gtk/linux/x86,file:../../plugins/org.eclipse.swt.gtk.linux.x86/libcairo.so.1
 root.linux.gtk.x86.permissions.755=*.so*
 root.linux.gtk.ppc=../../features/org.eclipse.platform.launchers/bin/gtk/linux/ppc