[gjs] Partially revert "Windows: Build against SpiderMonkey 52"

[Chun-wei Fan <fanchunwei src gnome org>]

commit d4fdcb3a51881d4ea6863b9050290e101907738b
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Wed Jun 14 11:40:00 2017 +0800

    Partially revert "Windows: Build against SpiderMonkey 52"
    
    Sorry, I accidentally pushed the update to use SpiderMonkey 52 to the master
    branch, which is on 38.  Revert the part that updates the Visual Studio
    build files to use SpiderMonkey 38, but we still want to update the build
    to use the Centricular fork of libffi.

 win32/README.txt      |    2 +-
 win32/config-msvc.mak |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/win32/README.txt b/win32/README.txt
index 759a1e1..4aa9dbb 100644
--- a/win32/README.txt
+++ b/win32/README.txt
@@ -6,7 +6,7 @@ via NMake Makefiles.  Due to C++-11 usage, Visual Studio 2012 or
 earlier is not supported.
 
 You will need the following items to build GJS using Visual Studio:
--SpiderMonkey 52 (mozjs-52)
+-SpiderMonkey 38 (mozjs-38)
 -GObject-Introspection (G-I) 1.41.4 or later
 -GLib 2.50.x or later, (which includes GIO, GObject, and the associated tools)
 -Cairo including Cairo-GObject support, unless NO_CAIRO=1 is specified.
diff --git a/win32/config-msvc.mak b/win32/config-msvc.mak
index 0495943..339a7f9 100644
--- a/win32/config-msvc.mak
+++ b/win32/config-msvc.mak
@@ -1,7 +1,7 @@
 # NMake Makefile portion for enabling features for Windows builds
 
 # Spidermonkey release series (17, 24, 31, 38, 45 etc.)
-MOZJS_VERSION = 52
+MOZJS_VERSION = 38
 
 # Please see https://bugzilla.gnome.org/show_bug.cgi?id=775868,
 # comments 26, 27 and 28