avcodec/ppc/vp8dsp_altivec.c: POWER LE support put_vp8_epel_h_altivec_core() put_vp8_epel_v_altivec_core() put_vp8_pixels16_altivec() add marcos GET_PIXHL() GET_OUTER() LOAD_HL()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
MAINTAINERS: add 2.5

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>