[x265/el7] (23 commits) ...Rebuild for ffmpeg-3.* on el7

Summary of changes: 69bfd3b... Update to 2.1 (*) ecd74d5... update to 2.2 (*) 2dc33f7... - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass (*) 9bb47ce... Enable 10/12 bit libraries on 64 bit architectures (*) d0b06b8... update to 2.4 (*) ab0b4f8... - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass (*) d87b513... update to 2.5 (*) 3d93608... Update x265 to 2.6 (*) cb9f82d... update name of unpack directory (*) 02291ab... U+date so_versio to 146 (*) fd9b4d2... quick fix for arm builds (*) 2ff9ef8... Update to 2.7 (*) 388ff93... disable arm asm build till someone else can fix it properly (*) ecc0e1c... Revert "disable arm asm build till someone else can fix it (*) 00c7d18... Fix build on arm (*) c2760ca... Fix pkgconfig file (rfbz #4853) (*) 65c1d0a... - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass (*) aed7053... - Rebuilt for Fedora 29 Mass Rebuild binutils issue (*) cd2972a... Update to 2.8 (*) 3ddac98... Update to 2.9 (*) 3610989... add Debian patch to fix build (*) bb04821... Rebuild for ffmpeg-3.* on el7 (*) d9c20fe... Rebuild for ffmpeg-3.* on el7 (*) This commit already existed in another branch; no separate mail sent