v5.1.2

Fixed

• Fixed Windows source builds against Node.js 26 failing with LINK : fatal error LNK1117: syntax error in option 'opt:lldltojobs=2'. Node 26 was built with clang-cl + lld + ThinLTO (PR nodejs/node#63114, released in v26.3.0), and node-gyp's create-config-gypi.js seeds the addon's config.gypi from process.config of the running Node binary — picking up enable_thin_lto: true and lto_jobs: <n> from how Node itself was built. Node's installed common.gypi then unconditionally appends -flto=thin to MSVC cl.exe's AdditionalOptions and /opt:lldltojobs=<n> to link.exe's. MSVC ignores -flto=thin (warning) but rejects /opt:lldltojobs=<n> because /OPT: only accepts REF/ICF/NOREF/NOICF/LBR/NOLBR. Force them off via npm_config_enable_thin_lto=false + npm_config_enable_lto=false in the Windows build script, which node-gyp forwards as -Denable_thin_lto=false gyp defines (top precedence — binding.gyp variables don't override config.gypi's, they're a separate gyp scope).