Modify table scripts

[spyman1802]

I have modified the function for gen tables scripts.

1. remove some space and tab
2. remove supplement log line
3. replace tab with space
4. set CONSTRAINTS_AS_ALTER default to true
5. change add constraint statement to last line for fixing index bug

and others changes

1. change the sql retrieving objects to add distinct option, and speed up this sql
2. delete owner from all scripts