Rework the man pages by:
- Wording the synopsis sections similarly for all commands
- Not using upper-case section names, as this is unnecessary and results
in worse HTML output
- Formatting code and file names as literals
The 'nova-idmapshift' man page is excluded as this utility will be
removed shortly.
Change-Id: I67914a757f9436461960a8d6b92d157f59ccad66
Stephen Finucane
3a6e1e2396