src/printing.c: modified debug output.
src/printing.c: print all texts in messages, not only the first one.
removed all warnings output with -Wall.
printing.c: a workaround for the crach which seems to occur on Fedora Core.
made the default directory of printing dialog document dir.
adjusted the print margin for page number.
implemented page setup.
fixed crash on the request of a page which is out of range.
Implemented printing of MIME part using GtkPrintOperation.
reimplemented multiple page printing.
use the display font size.
adjusted the line number of first page on printing.
added page number on printing.
more proper implementation of printing.c.
implemented printing of multiple pages.
implemented page counting.
show confirmation dialog when printing MIME part.
implemented printing of MIME part. Code cleanups.
initial implementation of new printing using GtkPrintOperation.