pgsql: - Fixed segfault in ecpg when using an array element.

Log Message:
-----------
- Fixed segfault in ecpg when using an array element.
- Free all memory in auto-prepare mode.

Modified Files:
--------------
    pgsql/src/interfaces/ecpg:
        ChangeLog (r1.369 -> r1.370)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ChangeLog?r1=1.369&r2=1.370)
    pgsql/src/interfaces/ecpg/ecpglib:
        execute.c (r1.75 -> r1.76)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/execute.c?r1=1.75&r2=1.76)
        extern.h (r1.33 -> r1.34)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/extern.h?r1=1.33&r2=1.34)
        prepare.c (r1.25 -> r1.26)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/prepare.c?r1=1.25&r2=1.26)
    pgsql/src/interfaces/ecpg/preproc:
        variable.c (r1.43 -> r1.44)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/variable.c?r1=1.43&r2=1.44)