[PATCH V2] Fix build with glibc 2.20

[Khem Raj]

* grub-core/kern/emu/hostfs.c: squahes below warning
  warning: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use 
_DEFAULT_SOURCE"

Signed-off-by: Khem Raj <address@hidden>

Upstream-Status: Submitted
---
 grub-core/kern/emu/hostfs.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/grub-core/kern/emu/hostfs.c b/grub-core/kern/emu/hostfs.c
index 7e725f6..823116d 100644
--- a/grub-core/kern/emu/hostfs.c
+++ b/grub-core/kern/emu/hostfs.c
@@ -19,7 +19,11 @@
 
 #include <config-util.h>
 
+/* Legacy feature macro.*/
 #define _BSD_SOURCE
+/* New feature macro that provides everything _BSD_SOURCE and
+ *    _SVID_SOURCE provided and possibly more.  */
+#define _DEFAULT_SOURCE
 #include <grub/fs.h>
 #include <grub/file.h>
 #include <grub/disk.h>
-- 
2.1.0