fix always true if conditions
replace 'head -n -1' with BSD-compatible awk call
make tests work with 'with-sqlite=no'
Make interface to priority queue consistent.
Added test case for priority queues.
Made the priority queue generic.
NULL argument for cmpfun eliminated.
Use extract_min instead of delete_min for functionname.
coding style
fixes to make scan-build happy
Fixed warnings reported by scan-build.
Fixed assertion in diffcov and some issues in strgraph.c
scan-build fixes to rdj-strgraph