Fix v8_extprj build errors when using icecc

Open-webOS-DCO-1.0-Signed-off-by: Antti Harju <antti.harju@palm.com>
Open-webOS-DCO-1.0-Signed-off-by: Roger Stringer <roger.stringer@palm.com>

Change-Id: I2abdccaaa60d31837e669303a1236dd5e73944ee

Fix for build failure under Ubuntu 12.04

- Replace execute_process(COMMAND cmake -E copy_directory ...) with
  file(COPY ...) to prevent failure when running on Ubuntu 12.04 .
- Fix variable expansion typo in the string(COMPARE ...) that determines
  if this is an "in-source" build for v8.
- node-waf passes -D_GNU_SOURCE when building modules; add it to the
  nodejs.pc file so that we match exactly.

Change-Id: I11ec3c0e2e87961f6d6449d933d0eb3514812f92

Add missing compiler flags to nodejs.pc file

Additional compiler flags turned out to be needed in order to
successfully build nodejs modules.

Change-Id: I17e8aec129fe3f9bf123c02c25a9caf0eef93ff5

Add missing compiler flags to nodejs.pc file

Additional compiler flags turned out to be needed in order to
successfully build nodejs modules.

Change-Id: I17e8aec129fe3f9bf123c02c25a9caf0eef93ff5

Release nodejs 0.4.12-webos2 to the public

Release nodejs 0.4.12-webos2 to the public