Basic underpinnings of the gyp equivalent of the Linux SHARED=1 build:...

build/temp_gyp/v8.gyp

Index: build/temp_gyp/v8.gyp
===================================================================
--- build/temp_gyp/v8.gyp	(revision 13288)
+++ build/temp_gyp/v8.gyp	(working copy)
@@ -340,7 +340,7 @@
     # Targets to build v8 for the native architecture (ia32).
     {
       'target_name': 'v8_base',
-      'type': 'static_library',
+      'type': '<(library)',
       'include_dirs': [
         '../../v8/src',
       ],
@@ -394,7 +394,7 @@
     },
     {
       'target_name': 'v8_nosnapshot',
-      'type': 'static_library',
+      'type': '<(library)',
       'dependencies': [
         'js2c',
         'v8_base',
@@ -423,7 +423,7 @@
     },
     {
       'target_name': 'v8',
-      'type': 'static_library',
+      'type': '<(library)',
       'dependencies': [
         'js2c',
         'mksnapshot',
@@ -518,7 +518,7 @@
     # (src/simulator-arm.cc).  The ARM targets are not snapshot-enabled.
     {
       'target_name': 'v8_arm',
-      'type': 'static_library',
+      'type': '<(library)',
       'dependencies': [
         'js2c',
       ],