Add dialyzer_rebar target
Add dialyzer_rebar target

This uses rebar to run dialyzer, though it doesn't (yet) handle
building the PLT.

Change-Id: I9d2000e69cc200ab82f730e5702adaf327637a91
Reviewed-on: http://review.membase.org/4567
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>

membase/ns_server,membase/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,ceejatec/ns_server,vzasade/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,ceejatec/ns_server,vzasade/ns_server,pavel-blagodov/ns_server,nimishzynga/ns_server,membase/ns_server,vzasade/ns_server,mschoch/ns_server,mschoch/ns_server,daverigby/ns_server,membase/ns_server,ceejatec/ns_server,pavel-blagodov/ns_server,t3rm1n4l/ns_server,membase/ns_server,ceejatec/ns_server,daverigby/ns_server,daverigby/ns_server,daverigby/ns_server,daverigby/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,membase/ns_server,nimishzynga/ns_server,ceejatec/ns_server,mschoch/ns_server