API changes:

API changes:
        removed: pwmd_pending_line(), pwmd_assuan_ctx(),
                 pwmd_free_result(), pwmd_get_result(), pwmd_finalize()

        added: pwmd_new(), pwmd_get_fd(), pwmd_free(), pwmd_malloc(),
               pwmd_calloc(), pwmd_realloc(), pwmd_strdup()

pwmd_new() returns a handle for use with all functions. Functions that
retured a pwm_t now return a gpg_error_t. The 'name' argument when set,
will send "OPTION CLIENT NAME=name" to the server after the connection
is made.

A 'result' argument is now passed to pwmd_process() which replaces
pwmd_finalize() and pwmd_get_result() (needs work).

pwmd_password_fn no longer uses a pwm_t parameter; only user data.

Fixed _getpwuid().

pwmd_command() will only set 'result' to NULL if 'result' is not NULL.
Another fix which should have been included in commit 9a7055d.