Log Message:
Update php-pdflib package to 2.1.7.

2.1.7	- fixed [PECL-BUG] Bug #16066 [NEW]: Missing php_pdflib.h in archive.
2.1.6	- added PDF_utf32_to_utf16()
	- improved show_boxed() function
	- fixed GD_SUPPORT (not supported)
2.1.5	- switched to package.xml 2.0 Format
	- improved exception handling
2.1.4	- fixed wrong handling of int parameters which on some 64bit platforms
	  caused problems.
2.1.3	- fixed potential crash after exceptions
	- show_boxed was missing in the OO-Wrapper
2.1.2	- fixed: Bug #9216 Don't build with PHP 5.2 (again)
2.1.1	- utf16_to_utf8() adn utf8_to_utf16() was missing in the OO-Wrapper
2.1.0	- added support for PDFlib 7
	- prepaired for build with PHP 5.2 (API of PHP_ME_MAPPING changed)
2.0.5	Bugfixes:
	- fixed Bug http://pecl.php.net/bugs/bug.php?id=3554
2.0.4	Bugfixes:
	- fixed buildproblems when used link PDFLib statically into PHP.