doc: rename to tileman

refrect changing project name

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
render-expired: manage as submodule

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
iniparser: manage as submodule

Signed-off-by: Hiroshi Miura <miurahr@linux.com>