For These Trailblazers, Wheelchairs Matter
Article on push to make wilderness areas more accessible to disabled people and resulting controversy over wisdom in doing so; National Forests in US Forest Service's Eastern Region--from Maine to Minnesota and Missouri to West Virginia--spent $2 million in last year and $18 million last eight on improving accessibility, and has been working on general guidelines for outdoor access; rebuilding of Galehead hut in White Mountains of New Hampshire for disabled by Appalachin Mountain Club discussed; some club members and some of local newspapers have ridiculed idea of making rustic 38-bed lodge accessible to handicapped as absurd waste of money; photos; maps (M)