Log Message:
Update to 1.22

Upstream changes:
1.22  2015-11-25 10:35:00 MANWAR
      - Fixed the debug level handling.
      - Updated pod document about the same.

1.21  2015-11-24 14:00:00 MANWAR
      - Fixed issue RT# 109562.

1.20  2015-11-24 MANWAR
      - Updated method PDF::Create::Page::string() to handle character/word \ 
spacing. (Thanks David Kitcher-Jones).
      - Updated method PDF::Create::Page::text() to handle font correctly. \ 
(Thanks David Kitcher-Jones).
      - Added new method PDF::Create::Page::block_text() to manage block of \ 
text.  (Thanks David Kitcher-Jones).
      - Updated method PDF::Create::Page::block_text() to handle multiple \ 
paragraphs. (MANWAR)
      - Documented method text() and block_text(). (MANWAR)