Disable NEON code on Native Client
Disable NEON code on Native Client

The NEON assember in libwebp has not yet been ported
to Native Client. This changes disables it.
Related issue:
https://code.google.com/p/nativeclient/issues/detail?id=3205

Change-Id: I200291db7aa79d40c1f10cff7622c9b8599e6886

ttyangf/libwebp,gshORTON/webm.libwebp,jiehu5114/libwebp,iniwf/webm.libwebp,matanbs/webm.libwebp,ya7lelkom/libwebp,Suvarna1488/webm.libwebp,abwiz0086/webm.libwebp,matanbs/webm.libwebp,ttyangf/libwebp,yohunl/libwebp,Acidburn0zzz/webm.libwebp,zofuthan/libwebp,ttyangf/libwebp,imazen/libwebp,Suvarna1488/webm.libwebp,yohunl/libwebp,zofuthan/libwebp,PKRoma/libwebp,Acidburn0zzz/webm.libwebp,gshORTON/webm.libwebp,webmproject/libwebp,Aexyn/libwebp,jiehu5114/libwebp,Suvarna1488/webm.libwebp,reimaginemedia/webm.libwebp,jiehu5114/libwebp,Maria1099/webm.libwebp,kim42083/webm.libwebp,jacklicn/libwebp,kim42083/webm.libwebp,matanbs/webm.libwebp,yohunl/libwebp,matanbs/webm.libwebp,matanbs/webm.libwebp,ya7lelkom/libwebp,reimaginemedia/webm.libwebp,PKRoma/libwebp,webmproject/libwebp,imazen/libwebp,ericmckean/webm.libwebp,Maria1099/webm.libwebp,kim42083/webm.libwebp,ericmckean/webm.libwebp,Aexyn/libwebp,abwiz0086/webm.libwebp,abwiz0086/webm.libwebp,iniwf/webm.libwebp,kalli123/webm.libwebp,Maria1099/webm.libwebp,zofuthan/libwebp,rxl194/libwebp,iniwf/webm.libwebp,kalli123/webm.libwebp,altogother/webm.libwebp,ericmckean/webm.libwebp,Suvarna1488/webm.libwebp,redengineer/libwebp,gshORTON/webm.libwebp,redengineer/libwebp,ttyangf/libwebp,imazen/libwebp,Maria1099/webm.libwebp,kim42083/webm.libwebp,kleopatra999/webm.libwebp,ericmckean/webm.libwebp,altogother/webm.libwebp,redengineer/libwebp,gshORTON/webm.libwebp,webmproject/libwebp,iniwf/webm.libwebp,ya7lelkom/libwebp,redengineer/libwebp,redengineer/libwebp,kim42083/webm.libwebp,jacklicn/libwebp,jiehu5114/libwebp,Acidburn0zzz/webm.libwebp,rxl194/libwebp,altogother/webm.libwebp,jacklicn/libwebp,Maria1099/webm.libwebp,reimaginemedia/webm.libwebp,gshORTON/webm.libwebp,ericmckean/webm.libwebp,Aexyn/libwebp,PKRoma/libwebp,Acidburn0zzz/webm.libwebp,yohunl/libwebp,jiehu5114/libwebp,ya7lelkom/libwebp,kleopatra999/webm.libwebp,reimaginemedia/webm.libwebp,altogother/webm.libwebp,kleopatra999/webm.libwebp,Aexyn/libwebp,iniwf/webm.libwebp,reimaginemedia/webm.libwebp,webmproject/libwebp,abwiz0086/webm.libwebp,Acidburn0zzz/webm.libwebp,kleopatra999/webm.libwebp,jacklicn/libwebp,webmproject/libwebp,abwiz0086/webm.libwebp,rxl194/libwebp,jacklicn/libwebp,ttyangf/libwebp,kalli123/webm.libwebp,imazen/libwebp,yohunl/libwebp,PKRoma/libwebp,kalli123/webm.libwebp,rxl194/libwebp,kalli123/webm.libwebp,PKRoma/libwebp,PKRoma/libwebp,Suvarna1488/webm.libwebp,rxl194/libwebp,kleopatra999/webm.libwebp,ya7lelkom/libwebp,imazen/libwebp,zofuthan/libwebp,altogother/webm.libwebp,zofuthan/libwebp,Aexyn/libwebp