2012.02.14, Version 0.7.4 (unstable)

• Upgrade V8 to 3.9.5
• Upgrade npm to 1.1.1
• build: Detect host_arch better (Karl Skomski)
• debugger: export debug_port to process (Fedor Indutny)
• api docs: CSS bug fixes (isaacs)
• build: use -fPIC for native addons on UNIX (Nathan Rajlich)
• Re-add top-level v8::Locker (Marcel Laverdet)
• Move images out of the dist tarballs (isaacs)
• libuv: Remove uv_export and uv_import (Ben Noordhuis)