pdfviewer: workaround gyp issue with multiple files, not being translated into an array in linux (w…

experimental/PdfViewer/copy_files.py

 import os
 import shutil
 import sys
 
+def copyfile(src, dst):
+  fsrc = None
+  fdst = None
+  try:
+    fsrc = open(src, 'rb')
+    fdst = open(dst, 'wb')
+    shutil.copyfileobj(fsrc, fdst)
+  finally:
+    if fdst:
+      fdst.close()
+    if fsrc:
+      fsrc.close()
+
 dstdir = sys.argv[1]
 
+if not os.path.exists(dstdir):
+  os.makedirs(dstdir)
+
 for i in range(2, len(sys.argv)):
-  shutil.copy(sys.argv[i], dstdir)
+  copyfile(sys.argv[i], os.path.join(dstdir, os.path.basename(sys.argv[i])))