motion estimation changes

Originally committed as revision 1367 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/ffmpeg.regression.ref

 ffmpeg regression test
-cd28e71742a6dead8e0d33987bd7bf44 *./data/a-mpeg1.mpg
-74bda91990c18e7b219d84b7ac970816 *./data/out.yuv
-01410257b88ee5d1c390737d4274bd3f *./data/a-msmpeg4v2.avi
-a1d54e9d006cc31a5b71dabadbb4df53 *./data/out.yuv
-6a9d8f162eb59b8bbf7c737ede86ef8b *./data/a-msmpeg4.avi
-bdd8dc1182fa731f54c3b5ebf9002e40 *./data/out.yuv
-9b0494986a6d27cc51eaf61f14b31043 *./data/a-wmv1.avi
-169031aa2cdd74e58f1c144efc7c03e6 *./data/out.yuv
-30abed5bc6a127b04b73bb436ad3b55a *./data/a-h263.avi
-0059bed3addc017d9f089f3256769a51 *./data/out.yuv
-8d5cb42c511fc35fde63009b0abf24dd *./data/a-h263p.avi
-f7b3140fea7b70a5673061aebe547562 *./data/out.yuv
-a180b84cc43ab6bed7796354385f00c1 *./data/a-odivx.avi
-3a1463cf62c2bee9046870f34400494c *./data/out.yuv
-50be55c7fbb9a7b05d51afe3004232ef *./data/a-mpeg4-rc.avi
-f881bf7db273282791c18330bcae338d *./data/out.yuv
-b517505ecd37c09656ae12646428da58 *./data/a-mpeg4-adv.avi
-0147bab9d6971eb177457dd096ae8aaf *./data/out.yuv
+ad6a32c95384b9e92ac0e0c0701b40ec *./data/a-mpeg1.mpg
+4df461aae1771d5472cb3dbacdd8078f *./data/out.yuv
+7784ab8ea1c57242ab2fd23c83666b10 *./data/a-msmpeg4v2.avi
+f3bc40b0a09eb06504fa5b51eb9135ee *./data/out.yuv
+4c4323c1e3fd5c76944b4e48bd6c678c *./data/a-msmpeg4.avi
+3ede54eadc97f43b4ab260faeb5e8674 *./data/out.yuv
+2f6d0138eca59f1e60d7d63b31735e37 *./data/a-wmv1.avi
+19b9075fb4fc264247e1f0237a00d43f *./data/out.yuv
+a6527e93fe0e2e5942934efbde59f78b *./data/a-h263.avi
+f3bc40b0a09eb06504fa5b51eb9135ee *./data/out.yuv
+a11e0b741fa3c7fc491fb58ab8f7ca8d *./data/a-h263p.avi
+615e3db2bdc535ca5b17996b29cabf24 *./data/out.yuv
+5d7af332678d590e921064337ecde8ac *./data/a-odivx.avi
+3ede54eadc97f43b4ab260faeb5e8674 *./data/out.yuv
+9638438b206816d6cca55a2f822abc24 *./data/a-mpeg4-rc.avi
+d34057ff0806320c8be54fe34210c937 *./data/out.yuv
+4be05fbae92279715a3e88feec87da8e *./data/a-mpeg4-adv.avi
+59d969f054ed466da9bc9b4c211620fb *./data/out.yuv
 2846c8e3d97d7395eb746bfce44e0443 *./data/a-mjpeg.avi
 278033451d7a6bfeb8339abbe4228499 *./data/out.yuv
-bbb398b23e7e69bebf584e6697e3360c *./data/a-rv10.rm
-0059bed3addc017d9f089f3256769a51 *./data/out.yuv
+b5f5efce96150d5cc8f5af8024ae3688 *./data/a-rv10.rm
+f3bc40b0a09eb06504fa5b51eb9135ee *./data/out.yuv
 21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
 116d1290ba1b4eb98fdee52e423417b1 *./data/out.wav
 048b9c3444c788bac6ce5cc3a8f4db00 *./data/a-ac3.rm