Add conditional -Dtarget_arch flag to gyp_uv.py invocation in build_libuv_linux() to support ia32 for 32-bit and x64 for 64-bit architectures, enabling cross-compilation for all Linux targets.
Add conditional -Dtarget_arch flag to gyp_uv.py invocation in build_libuv_linux() to support ia32 for 32-bit and x64 for 64-bit architectures, enabling cross-compilation for all Linux targets.