Make mapserver install location version independent * src/java/de/intevation/mxd/writer/MapScriptWriter.java, mxd/connections/SDE/sde_areas.txt, contrib/installer/bin/ms_6.1-dev/Readme.txt, contrib/installer/bin/MXD2map-Shell.bat, INSTALL.txt HowTo-Release.txt: Make mapserver install location version independent s/ms-6.1-dev/mapserver/g

LAYER 
	NAME "p_arrowmarker_0-0-0_12-0"
    TYPE POINT 
    DATA "poi"
    STATUS ON
	GROUP "point"
    METADATA
    	"wms_title"     "p_arrowmarker_0-0-0_12-0"
    END
    CLASS
    	STYLE
			SYMBOL "p_arrowmarker_0-0-0_12-0"
			ANGLE 90
            COLOR 0 0 0
            SIZE 12
			WIDTH 8
		END
	END
END