Add linker flags when linking kernel.exec to have malloc and free point to
grub_malloc() and grub_free() respectively. Some gdb functionality depends on
gdb locating the symbols "malloc" and "free", such as dynamically creating
strings for arguments to injected function calls. A trivial example would
the gdb command 'p strlen("astring")'. Make sure not to do this on emu
platforms, or an infinite loop occurs because emu has a special
grub_malloc() that calls malloc().
Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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