start of tests refactoring; sqlite3 new wrapper fixes

tests/tstrdist.nim

@@ -1,26 +0,0 @@
-# compute the edit distance between two strings
-
-proc editDistance(a, b: string): int =
-  var
-    c: seq[int]
-    n = a.len
-    m = b.len
-  newSeq(c, (n+1)*(m+1))
-  for i in 0..n:
-    c[i*n] = i # [i,0]
-  for j in 0..m:
-    c[j] = j # [0,j]
-
-  for i in 1..n:
-    for j in 1..m:
-      var x = c[(i-1)*n + j]+1
-      var y = c[i*n + j-1]+1
-      var z: int
-      if a[i-1] == b[j-1]:
-        z = c[(i-1)*n + j-1]
-      else:
-        z = c[(i-1)*n + j-1]+1
-      c[(i-1)*n + (j-1)] = min(x,min(y,z))
-  return c[n*m]
-
-write(stdout, editDistance("abc", "abd"))