shared: Print .c file/line number in x* routines

Switches from inline to pre-processor definitions in order to utilize
__FILE__ and __LINE__ from the .c file in order to display the location
of memory allocation failures when failing.

Now xmalloc, et al calls will produce:

    [weston-info] clients/weston-info.c:714: out of memory (1024)

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

shared/xalloc.h

@@ -38,30 +38,10 @@ extern "C" {
 void *
 fail_on_null(void *p, size_t size, char *file, int32_t line);
 
-static inline void *
-xmalloc(size_t s)
-{
-	return fail_on_null(malloc(s), s, NULL, 0);
-}
-
-static inline void *
-xzalloc(size_t s)
-{
-	return fail_on_null(zalloc(s), s, NULL, 0);
-}
-
-static inline char *
-xstrdup(const char *s)
-{
-	return fail_on_null(strdup(s), 0, NULL, 0);
-}
-
-static inline void *
-xrealloc(char *p, size_t s)
-{
-	return fail_on_null(realloc(p, s), s, NULL, 0);
-}
-
+#define xmalloc(s) (fail_on_null(malloc(s), (s), __FILE__, __LINE__))
+#define xzalloc(s) (fail_on_null(zalloc(s), (s), __FILE__, __LINE__))
+#define xstrdup(s) (fail_on_null(strdup(s), 0, __FILE__, __LINE__))
+#define xrealloc(p, s) (fail_on_null(realloc(p, s), (s), __FILE__, __LINE__))
 
 #ifdef  __cplusplus
 }