* configure.ac:
	* poppler/ABWOutputDev.cc:
	* poppler/ABWOutputDev.h:
	* poppler/Makefile.am:
	* utils/Makefile.am:
	* utils/pdftoabw.cc: Add AbiWord output device and pdftoabw program.
	Patch by Jauco Noordzij. Autotools stuff by Dominic Lachowicz.