Another update to DivingLog import

This fixes two bugs:
- we overwrote the max depth that we read from an XML file with 0 if there
  are no samples
- we didn't parse the DepthAvg tag in the DivingLog XML

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

dive.c

@@ -617,7 +617,8 @@ static void fixup_dive_dc(struct dive *dive, struct divecomputer *dc)
 	double depthtime = 0;
 	int lasttime = 0;
 	int lastindex = -1;
-	int maxdepth = 0, mintemp = 0;
+	int maxdepth = dc->maxdepth.mm;
+	int mintemp = 0;
 	int lastdepth = 0;
 	int lasttemp = 0, lastpressure = 0;
 	int pressure_delta[MAX_CYLINDERS] = {INT_MAX, };

xslt/DivingLog.xslt

@@ -47,6 +47,11 @@
             <xsl:value-of select="concat(Depth, ' m')"/>
           </xsl:attribute>
         </xsl:if>
+        <xsl:if test="DepthAvg != ''">
+          <xsl:attribute name="mean">
+            <xsl:value-of select="concat(DepthAvg, ' m')"/>
+          </xsl:attribute>
+        </xsl:if>
       </depth>
 
       <location>