revset: add matchany() to construct OR expression from a list of specs
This will allow us to optimize "-rREV1 -rREV2 ..." command-line options.
FROM centos:centos6
RUN yum install -y gcc
RUN yum install -y python-devel python-docutils
RUN yum install -y make
RUN yum install -y rpm-build
RUN yum install -y gettext
RUN yum install -y tar
# For creating repo meta data
RUN yum install -y createrepo