fix typo in sshargs the original typo dated back to early 2005

mq: drop obsolete reference to 'qversion'

win32: fix ssh://host:port when using Plink Moves ssh argument building to platform specific utils code. The win32 version looks for plink in ssh command string and uses '-P' in lieu of '-p' for specifying a port

patchbomb: make "hg email -b" w/o destination work as advertised

Default to 10.5 version using the default python 2.5

patchbomb: prompt with ui.prompt() Avoid Windows raw_input() issue introduced by a3fe91b4f6eb. Found by Steve Borho <steve@borho.org>.