Adjust translations for the spacing changes etc. which this introduces.

When using a variable to store the result of strlen(), make sure its
type is size_t just like the function returns, rather than using a
smaller type like int.

--HG--
extra : transplant_source : %B0%D5%3B%D7%1Dy%0A%7E%7D%7C%023%08%B2%CE%D3t%0B3%D7

If needed, use calloc() to allocate the area so that it's already
reset by the time it returns.

Using asprintf() instead of malloc() + sprintf() reduces the lines of
code in xine-lib (moving the allocation to the C library or asprintf
replacement), makes it safer to access the string and can also improve
performance whenever the value returned by a function was used as
parameter, as before it had to run the function twice in almost every
case (once for strlen(), once for sprintf()).

The xine_xmalloc() function is going to be deprecated, as its
behaviour is rarely needed as such, and it's thus misused.

With this, almost all uses of xine_xmalloc() with static size (for
instance the value returned by sizeof()) or with a size that is
guaranteed not to be zero (like strlen()+1) are replaced with calls to
either calloc(1, ...) or malloc().

malloc() is used whenever the allocated memory is going to be
immediately overwritten, while calloc() is used in every other case,
as it sets the whole memory area to zero.

--HG--
extra : transplant_source : %8F%98%EC%02%1E%83%F0s%06X%83C%205Y%80%B12%CC%E1

The value being converted is already of the correct type.

The problem was basically that detection if PA was available happened in
open() instead of open_plugin().