old_contents: {
      "targets": [{
      	"includes": [
      	    "auto.gypi",
              "final-flags.gypi"
      	],
  
      	"sources": [
              "<!@(ls -1 sources/yoga/*.cpp)",
              "sources/Config.cc",
              "sources/Node.cc",
              "sources/global.cc",
      	    "sources/nbind.cc"
      	],
  
          "cflags": [
              "-DNBIND"
          ],
  
          "include_dirs": [
              "sources"
          ]
      }],
  
      "includes": [
          "auto-top.gypi"
      ]
  }
  
new_contents: {
      "targets": [{
      	"includes": [
      	    "auto.gypi",
              "final-flags.gypi"
      	],
  
      	"sources": [
              "<!@(ls -1 sources/yoga/*.cpp)",
              "<!@(ls -1 sources/yoga/*/*.cpp)",
              "sources/Config.cc",
              "sources/Node.cc",
              "sources/global.cc",
      	    "sources/nbind.cc"
      	],
  
          "cflags": [
              "-DNBIND"
          ],
  
          "include_dirs": [
              "sources"
          ]
      }],
  
      "includes": [
          "auto-top.gypi"
      ]
  }
  
subject: add subdirectories of yoga also to js sources