npm: start generating the collateral needed to publish sources to npm

Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/binding.gyp.in

@@ -0,0 +1,25 @@
+{
+  'targets': [
+    {
+      'target_name': 'jsupm_@libname@',
+      'sources': [
+        @upm_LIB_SRCS_GYP@
+      ],
+      'include_dirs': [
+        @upm_LIB_INCLUDE_DIRS_GYP@
+      ],
+      'variables': {
+        "v8_version%": "<!(node -e 'console.log(process.versions.v8)' | sed 's/\.//g' | cut -c 1-5)",
+        "arch%": "<!(node -e 'console.log(process.arch)')"
+      },
+      'cflags_cc!': [ '-fno-rtti', '-fno-exceptions' ],
+      'cflags!': [ '-fno-exceptions' ],
+      'defines' : [
+        'SWIG',
+        'BUILDING_NODE_EXTENSION=1',
+        'SWIG_V8_VERSION=0x0<(v8_version)',
+        'V8_VERSION=0x0<(v8_version)'
+      ]
+    }
+  ]
+}