Rename VERSION to VERSION.info to avoid conflicts with modern STL

On case-insensitive file systems (e.g., macOS), inclusion of the new
standard <version> header resulted in unexpected inclusion of VERSION
file.

Change-Id: I7f8dd4703c76e833797135b980bbcc6c2e97bcef

.gitignore

@@ -26,4 +26,4 @@ __pycache__/
 *.py[cod]
 
 # Other
-/VERSION
+/VERSION.info

wscript

@@ -143,7 +143,7 @@ def version(ctx):
     except (OSError, subprocess.CalledProcessError):
         pass
 
-    versionFile = ctx.path.find_node('VERSION')
+    versionFile = ctx.path.find_node('VERSION.info')
     if not gotVersionFromGit and versionFile is not None:
         try:
             Context.g_module.VERSION = versionFile.read()
@@ -160,7 +160,7 @@ def version(ctx):
         except EnvironmentError as e:
             Logs.warn('%s exists but is not readable (%s)' % (versionFile, e.strerror))
     else:
-        versionFile = ctx.path.make_node('VERSION')
+        versionFile = ctx.path.make_node('VERSION.info')
 
     try:
         versionFile.write(Context.g_module.VERSION)