build: fix openssl link error on windows

This commit attempts to fix an issue when building on windows using the
following command line options:
.\vcbuild.bat dll debug x64 vc2015

This will result in the following options passed to configure:
configure --debug --shared --dest-cpu=x64 --tag=

This commit excludes the dependency to openssl if node is configured
with --shared.

Also, FP_API to the categories to export in mkssldef when generating
the module definition (openssl.def) allowing the build to compile and
link successfully.

Fixes: #12952
PR-URL: #13078
Backport-PR-URL: #12948
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Refael Ackermann <refack@gmail.com>

Author: danbev

node.gyp

@@ -250,7 +250,7 @@
               # Categories to export.
               '-CAES,BF,BIO,DES,DH,DSA,EC,ECDH,ECDSA,ENGINE,EVP,HMAC,MD4,MD5,'
               'NEXTPROTONEG,PSK,RC2,RC4,RSA,SHA,SHA0,SHA1,SHA256,SHA512,SOCK,'
-              'STDIO,TLSEXT',
+              'STDIO,TLSEXT,FP_API',
               # Defines.
               '-DWIN32',
               # Symbols to filter from the export list.
@@ -616,7 +616,7 @@
             'test/cctest/test_inspector_socket.cc',
           ],
           'conditions': [
-            [ 'node_shared_openssl=="false"', {
+            [ 'node_shared_openssl=="false" and node_shared=="false"', {
               'dependencies': [
                 'deps/openssl/openssl.gyp:openssl'
               ]