bxcommit: added capability to commit undoable redolog to a growing mode base image
bximage: minor cleanups
TODO: write a new bximage utility in C++ and use the hdimage classes to create
and convert all image modes and to commit redologs to all base image modes.


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11866 6c8e4198-a580-4521-a02f-c9ae86df1db9