C343-3 creation of the Ranger quest start level

C343-3 creation of the Ranger quest start level
Normal maze levels are initialized from x == 3 thru COLNO-1.  However,
levels that use the INIT_MAP spec go thru mkmap, which initializes the level
starting at x == 1.  This usually makes no difference, but does in the case
of levels that also use GEOMETRY:left.  This was the case with the Ranger
start level and caused the leftmost 2 locations to be room locations but
unreachable.  The Juiblex level actually had the same behavior, but this
was harmless because the MAP in that case was smaller.

Fix is to set the xstart=1 for levels with INIT_MAP and GEOMETRY:left.
The rest of sp_lev works just with this (when INIT_MAP was used, that is).