avcodec/motion_est: Attempt to fix "short data segment overflowed" on IA64

This decreases the MV related encoding table sizes
This should have little effect on real world video encoding performance

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d7c75a5db0)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/motion_est.h

@@ -29,7 +29,11 @@
 
 struct MpegEncContext;
 
+#if ARCH_IA64 // Limit static arrays to avoid gcc failing "short data segment overflowed"
+#define MAX_MV 1024
+#else
 #define MAX_MV 4096
+#endif
 #define MAX_DMV (2*MAX_MV)
 
 #define FF_ME_ZERO 0