Added coverage support
Merge pull request #36 from thequux/codecoverage

Added coverage support
Removing coveralls, as it's not working for clang.
Merging JakobR's OS X build changes.
we support OS X now!
Allowed build to grab tools from PATH
Added build system for C++
Merge pull request #39 from thequux/binding-support

Binding support
Added install target
Update README.md with install target instructions
update usage instructions to assume system-wide install; this will change later, but is accurate now.
Merge pull request #41 from thequux/install-target

Added install target
Made test-suite work on its own
Merge pull request #42 from thequux/standalone-test-suite

Made test-suite work on its own
Changed parser test macros so that _parse_ok just checks whether the match succeeded and _parse_match actually checks the resulting parse tree
Merge pull request #43 from thequux/g-check-parse-ok

Changed parser test macros so that _parse_ok just checks whether the mat...
Fix SCons bugs

Don't clober the Environment (and thus the ENV['PATH'] by redefining it
and don't link against lr by default. Only add it if uname is not Darwin
Clean up ENV

Don't pass the entire environment to SCons. Only pass the PATH
Merge pull request #46 from jrozner/master

Fix SCons bugs