Increase timeout for some specs
Use bundler groups instead of ifs in Gemfile

This fixes automation cases where different versions of ruby (1.9 and
2.0) are being tested in one go. The lockfile is updated between runs
and `bundle install` must be run.

The specific if condition to conditionally load the code is going to be
deleted when the allocation tests are deleted.
When castring 64bit -> 32 bit, be explicit

Compilers should not allow implicit casting in strict mode. We also
really should check that the value will fit in 32 bits.
Add trace log message when opening a UDS
Remove allocation tests

These tests are fragile and are less important as we move towards native
code. Relates to #69
Remove .rspec from repsoitory

Resolves #101
Configurable timeouts for time sensitive specs

Relates to #69