update to 2.01

changes:
Redesigned the text extraction process:
  - process the text into "reading order"
  - added a "-layout" flag to pdftotext to switch back to the old
    style, where physical layout is maintained
  - use of the "-raw" flag is no longer recommended
Added the -reload option for xpdf (in remote mode).
Added support for external CID fonts; added the displayCIDFontT1 and
  displayNamedCIDFontT1 commands to the xpdfrc file.
Handle the case of moveto/newpath/clip, which defines an empty
  clipping region (just like moveto/closepath/clip).
Accept XYZ link destinations with missing array elements.
Accept bogus font names based on "Symbol": Symbol,{Bold,Italic,
  BoldItalic}.
Set the busy cursor in the find dialog while searching.
Allow ToUnicode CMaps to use fewer than four hex digits in the Unicode
  char indexes.
+bugfixes

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