build: fix cctest target with --enable-static

Currently the cctest target build will fail if configured with --enable-static

$ ./configure --enable-static
$ make

There're some function multiple definition errors such as:
  out/Release/obj.target/node/src/node_crypto.o: In function `node::crypto::RandomBytesWork(uv_work_s*)':
  node_crypto.cc:(.text+0x60): multiple definition of `node::crypto::RandomBytesWork(uv_work_s*)'
  out/Release/obj.target/node/src/node_crypto.o:node_crypto.cc:(.text+0x60): first defined here

It's caused by repetition objects in libraries and libnode.a.
This CL makes those libraries guarded by 'node_target_type!="static_library"'.

PR-URL: #17992
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

node.gyp

@@ -855,11 +855,15 @@
           ],
         }],
         [ 'node_use_openssl=="true"', {
-          'libraries': [
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)node_crypto.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)node_crypto_bio.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)node_crypto_clienthello.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)tls_wrap.<(OBJ_SUFFIX)',
+          'conditions': [
+            ['node_target_type!="static_library"', {
+              'libraries': [
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)node_crypto.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)node_crypto_bio.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)node_crypto_clienthello.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)tls_wrap.<(OBJ_SUFFIX)',
+              ],
+            }],
           ],
           'defines': [
             'HAVE_OPENSSL=1',
@@ -870,18 +874,22 @@
             'test/cctest/test_inspector_socket.cc',
             'test/cctest/test_inspector_socket_server.cc'
           ],
-          'libraries': [
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_agent.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_io.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_js_api.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_socket.<(OBJ_SUFFIX)',
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_socket_server.<(OBJ_SUFFIX)',
+          'conditions': [
+            ['node_target_type!="static_library"', {
+              'libraries': [
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_agent.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_io.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_js_api.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_socket.<(OBJ_SUFFIX)',
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)inspector_socket_server.<(OBJ_SUFFIX)',
+              ],
+            }],
           ],
           'defines': [
             'HAVE_INSPECTOR=1',
           ],
         }],
-        [ 'node_use_dtrace=="true"', {
+        [ 'node_use_dtrace=="true" and node_target_type!="static_library"', {
           'libraries': [
             '<(OBJ_PATH)<(OBJ_SEPARATOR)node_dtrace.<(OBJ_SUFFIX)',
           ],
@@ -899,14 +907,18 @@
             }],
           ],
         }],
-        [ 'OS=="win"', {
+        [ 'OS=="win" and node_target_type!="static_library"', {
           'libraries': [
             '<(OBJ_PATH)<(OBJ_SEPARATOR)backtrace_win32.<(OBJ_SUFFIX)',
-           ],
+          ],
         }, {
-          'libraries': [
-            '<(OBJ_PATH)<(OBJ_SEPARATOR)backtrace_posix.<(OBJ_SUFFIX)',
-           ],
+          'conditions': [
+            ['node_target_type!="static_library"', {
+              'libraries': [
+                '<(OBJ_PATH)<(OBJ_SEPARATOR)backtrace_posix.<(OBJ_SUFFIX)',
+              ],
+            }],
+          ],
         }],
         [ 'node_shared_zlib=="false"', {
           'dependencies': [