qwt: bump version

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/qwt/qwt.mk

@@ -4,7 +4,7 @@
 #
 #############################################################
 
-QWT_VERSION = 6.0.1
+QWT_VERSION = 6.0.2
 QWT_SOURCE = qwt-$(QWT_VERSION).tar.bz2
 QWT_SITE = http://downloads.sourceforge.net/project/qwt/qwt/$(QWT_VERSION)
 QWT_INSTALL_STAGING = YES