Wow! A five paragraph dissertation on the semantics of crossdresser versus transgender. My question is, is it really that important? If so, let's go to the references rather than express opinion.
http://www.merriam-webster.com/medical/transgender
of, relating to, or being a person (as a transsexual or a transvestite) who identifies with or expresses a gender identity that differs from the one which corresponds to the person's sex at birth
http://en.wikipedia.org/wiki/Transge..._cross-dresser
Wikipedia considers crossdresser one of several "Transgender Identities"
http://dictionary.reference.com/browse/transgender
1. a person appearing or attempting to be a member of the opposite sex, as a transsexual or habitual cross-dresser.
http://transequality.org/Resources/N...erminology.pdf
"Transgender: An umbrella term for people whose gender identity, expression or behavior is different from those typically associated with their assigned sex at birth, including but not limited to transsexuals, cross-dressers, androgynous people, genderqueers, and gender non-conforming people.'
I'd love to find one definition which excludes crossdressers from the transgender umbrella but I can't.