change the default in term of default localhost or port.

Now if the user have not specified them, instead of relying on
'localhost', 5432 psycopg2 will just try to connect which means
that it will use the default PGHOST PGPORT etc names

py/sqlutilpy/sqlutil.py

@@ -66,7 +66,7 @@ def getConnection(db=None,
                   user=None,
                   password=None,
                   host=None,
-                  port=5432,
+                  port=None,
                   timeout=None):
     """ Retrieve the connection to the DB object
 
@@ -96,12 +96,18 @@ def getConnection(db=None,
 
     """
     if driver == 'psycopg2':
-        conn_str = "dbname=%s host=%s port=%d" % (db, host, (port or 5432))
+        conn_dict = dict()
+        if db is not None:
+            conn_dict['dbname'] = db
+        if host is not None:
+            conn_dict['host'] = host
+        if port is not None:
+            conn_dict['port'] = port
         if user is not None:
-            conn_str = conn_str + ' user=%s' % user
+            conn_dict['user'] = user
         if password is not None:
-            conn_str = conn_str + ' password=%s' % password
-        conn = psycopg2.connect(conn_str)
+            conn_dict['password'] = password
+        conn = psycopg2.connect(**conn_dict)
     elif driver == 'sqlite3':
         import sqlite3
         if timeout is None:
@@ -251,10 +257,10 @@ def get(query,
         driver="psycopg2",
         user=None,
         password=None,
-        host='localhost',
+        host=None,
         preamb=None,
         conn=None,
-        port=5432,
+        port=None,
         strLength=10,
         timeout=None,
         notNamed=False,
@@ -448,7 +454,7 @@ def execute(query,
             driver="psycopg2",
             user=None,
             password=None,
-            host='localhost',
+            host=None,
             conn=None,
             preamb=None,
             timeout=None,
@@ -550,7 +556,7 @@ def upload(tableName,
            driver="psycopg2",
            user=None,
            password=None,
-           host='locahost',
+           host=None,
            conn=None,
            preamb=None,
            timeout=None,
@@ -665,8 +671,8 @@ def local_join(query,
                driver="psycopg2",
                user=None,
                password=None,
-               host='locahost',
-               port=5432,
+               host=None,
+               port=None,
                conn=None,
                preamb=None,
                timeout=None,