Fixed sge_common and merge script.

scripts/merge_each_db.sge

@@ -8,15 +8,16 @@
 #     DBDIR                   base dir for the generated db files
 #     OUTDBPATH               path containing the three-letter-dirs
 #     EXTENSIONCRAWLERPATH    ExtensionCrawler git repo
-set -u
-
 DBDIR="$1"
 OUTDBPATH="$2"
 EXTENSIONCRAWLERDIR="$3"
 
 source "$EXTENSIONCRAWLERDIR/scripts/sge_common"
+load_python
 override_vars
 
+set -u
+
 find "$DBDIR" -name "$(task_id_to_letter_256 $SGE_TASK_ID)*.sqlite" -print0 | while IFS= read -r -d '' file; do
   DBNAME=$(basename "$file")
   "$EXTENSIONCRAWLERDIR/scripts/merge_dbs" "$file" "$OUTDBPATH/${DBNAME:0:3}/$DBNAME"

scripts/sge_common

@@ -18,5 +18,5 @@ function get_last_snapshot_dir {
 
 function override_vars {
 	export PATH=~/bin:$PATH
-	export LD_LIBRARY_PATH=~/lib:$LD_LIBRARY_PATH
+	export LD_LIBRARY_PATH=~/lib:${LD_LIBRARY_PATH:-}
 }