Add variables for pamscale
Use variables instead of fixed string
Merge pull request #62 from yuutayamada/pamscale

Add variables for pamscale/pnmscale
temporary fix for pnm.
Using "pnmscale" by default.
ver bumps up.
adding 00changes.6.6.
s/6.6/6.6rc1/
updating 00readme.
reformatting info.
updating 00diff.
s/2012/2014/
vers of subcommands bump up.
remove argument for called-interactively-p.
Merge pull request #64 from shkit/fix-for-emacs22

remove argument for called-interactively-p.
Merge branch 'master' of github.com:kazu-yamamoto/Mew
defining mew-called-interactively-p.
using macro for mew-called-interactively-p.
update changes.
ver bumps up.