Fix http server issues when imagefile is on different directory
Fix computation of flash size
Obtain MAC address in a more portable way
Add percent display when dumping flash (instead of dots)
Set default to display progress information; added --quiet option
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13550 3c298f89-4303-0410-b956-a3cf2f4a3e73