configs: first cut at epel-7 configs for x86_64 and ppc64
- Add 'extra_chroot_dirs' config option
- use repoquery --installroot to avoid yum cache corruption [BZ# 1029352 and 985681]
- mockchain: avoid special characters in repoid [BZ# 1034805]
- from Jon Disnard <jdisnard@gmail.com>:
- implement autoreconf call in build phase of mock rpm [BZ# 926154]
- fix --copyout by temporary drop and restore of privs [BZ# 1002142]
- from Dennis Gilmore <dennis@ausil.us>:
- rawhide and f19/f18 is hardware floating point only for arm, drop the unneeded configs
- from Yann Droneaud <yann@droneaud.fr>:
- pass root environment to repoquery calls for proxy config [BZ# 974499]
- from Miroslav Suchý <msuchy@redhat.com>:
- add releasever config option to configs [BZ# 1056039]