context for hook errors

[drewbanin]

This now looks like:

Found 3 models, 3 tests, 2 archives, 1 analyses, 14 macros, 2 operations

Database error while running on-run-start
Encountered an error:
schema "badschema" does not exist
LINE 1: create table if not exists badschema.prehook_test (id int)
                                   ^

For #456

[cmcarthur]

@drewbanin can you send me the reproducing case? 0.8.4 handles hooks differently

[drewbanin]

@cmcarthur sure -- just write any on-run-start or on-run-end hook w/ a SQL error in it. I was using:

on-run-start: 'create table if not exists not_a_real_schema.test (id int)'
on-run-end: 'create table if not exists not_a_real_schema.test (id int)'