* glib/Makefile.am:
	* glib/poppler-form-field.cc:
	* glib/poppler-form-field.h:
	* glib/poppler-document.cc:
	* glib/poppler-document.h:
	* glib/poppler-page.cc:
	* glib/poppler-page.h:
	* glib/poppler-private.h:
	* glib/poppler.h:
	* glib/test-poppler-glib.c: Improve forms API in the glib bindings
	in order to make it more consistent with the current API and
	easier to use.