[#46491831]
Comments at the start of the file with ## caused YARD to think the
comment was documenting the require call. By removing the ##, the
warning disappeared. I did not determine what is special about ## in
file comments.
1. InitialAutoRunScript and AutoRunScript vars work
2. scripts/shells was created to hold them
3. *_shell methods were renamed shell_*
4. added "shell_command" method to command shell sessions
5. converted all uses of *_shell to shell_*
6. all payloads that produce command shell sessions include Msf::Sessions::CommandShellOptions
git-svn-id: file:///home/svn/framework3/trunk@8615 4d416f70-5f16-0410-b530-b9f4589650da