Disable certificate checking when using wget to fetch solr

Solaris, SmartOS, and FreeBSD are having trouble checking
the certificates of AWS when downloading the solr tgz.  This
commit simply passes `--no-check-certificate` to wget.
Merge pull request #180 from basho/jem-fix-wget-certificate-errors

Disable certificate checking when using wget to fetch solr
Refuse to build Solr without ant.
Refuse to build Yokozuna without javac and jar.
Merge pull request #182 from basho/bk-jdk-require

Require a JDK during build process.
Convert `index_name()` to binary

Use a binary index name to stay consistent with binary bucket name,
key name, etc.
SOLR_PKG_DIR skips download and uses a local copy
Merge pull request #187 from basho/dp_solr_pkg

SOLR_PKG_DIR skips download and uses a local copy
Merge pull request #184 from basho/refactor/rz/index-binary

Convert `index_name()` to binary
Remove entropy data timestamp

The entropy data timestamp is a holdover left from the very early days
of Yokozuna.  The 3rd commit to be exact.  The idea was to allow only
building a tree from data up to a certain time.  This was to prevent
spurious repair in a non-quiescent cluster.

However, the AAE system in KV doesn't have this feature and thus it is
never used.  It is simply dead code taking up time and space.  Time to
say goodbye.
Merge pull request #190 from basho/perf/rz/remove-ed-ts

Remove entropy data timestamp
Merge remote-tracking branch 'origin/develop' into feature/er/new-stats

Conflicts:
	src/yz_pb_search.erl
	src/yz_wm_search.erl