desktop, sysui: let --convert-to imply --headless

It's easy to forget --headless before --convert-to, and it's hard to
image that would be intentional ever.

Change-Id: I18b85837239d9450743f05d94bb2673c7d13246d
Factor out SwFmtVertOrient::dumpAsXml() from nodedump

Change-Id: Ic1008f0879f121abf3786d7eda282cce189c461a
Factor out SwFmtHoriOrient::dumpAsXml() from nodedump

Change-Id: I63ec35abcd7e69147ff4f98b1989875967c470fe
Factor out SwFmtAnchor::dumpAsXml() from nodedump

Change-Id: I080fd80cf0a2fd0531edcb21f189aaf4fd922ecc
resolveSprmProps() is used only in dmapper

Change-Id: I24227d700830a227ed8aa780b3b9e15c57b46f6e
writerfilter: fold single remaining header of resourcemodel into dmapper

Change-Id: I54cc8ebda18c8ca7071c39210687f28adbc4790a
fix indentation

Change-Id: Iebc587c55d83a7dbafd149fc605fcd9b6bab456c
Factor out SwFmtSurround::dumpAsXml() from docnode

Change-Id: Ia76bbaa02c0b306d4a5487f440b62d616cc8b29e