* More mentions of new --only-indexes feature
* Note we now support up to Postgres 9.3, and get rid of outdated list
of supported operating systems. (As far as we know, pg_repack should
build on any platforms supported by PostgreSQL itself, although no one
has tested the Windows build in a long time.)
* Remove most of the warnings about data corruption possible with concurrent
DDL: this should no longer be a concern now that we hold an ACCESS SHARE
lock during full-table repacks. Keep a short warning about old versions
being susceptible to this problem, just to make clear that it's fixed now
and as an enticement to upgrade.
* A few grammar, phrasing, and typo fixes
The -E flag to specify extended regular expressions apparently is
not portable to all platforms, such as CentOS 4.5. Use an uglier
but hopefully more portable basic regular expression in Makefiles.
