K 10 svn:author V 6 marcel K 8 svn:date V 27 2014-07-15T04:39:23.804661Z K 7 svn:log V 354 Add image_data() for checking whether a sequence of blocks has data. Use this for VHD and VMDK to avoid allocating space in the image for empty sectors. Note that this negatively affects performance because mkimg uses a temporary file for the intermediate storage. When mkimg has better internal book keeping, performance can be significantly improved. END