mapsettings - preparing undo framework

Adding a comment for default output projection
Mapsettings - adding a change map status command
mapsettings - Adding a command to set map size
mapsettings - adds a command to set map max size
mapsettings - Adding a command to set map units
mapsettings - adding a command to set extent
mapfileparser - preparing outputformat save
mapsettings - change map name command

using initialization list instead of affectation in constructor.
mapsettings - adding a command to set the shapepath
mapsettings - adding a command to set symbol set
mapsettings - adding a command to set the fontset
mapsettings - adding a class to set resolution
mapsettings - adding a command to set angle
mapsettings - removing warnings at compilation time