Make specifying the revision ranges more convenient.
Make specifying the revision ranges more convenient.

Added support for @all as revision range specifier to import all changes to a given depot path.
Also default to an import of #head if no revrange is specified.

Signed-off-by: Simon Hausmann <0a3c2b6956b68ea9079d8d9063677b62a646d61b@kde.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git