* include/signal.h: Changed signal typedef to signal_t (thanks to Jachym Holecek).
All `signal' instances renamed to `signal_t'.
* src/tap/parport.c: Ported to NetBSD/i386 (Jachym Holecek).
* src/tap/parport/direct.c (parport_drivers): Conditionally removed direct_parport_driver.
* configure.ac: Added test for i386_set_ioperm() function. Defined HAVE_IOPERM
and HAVE_I386_SET_IOPERM.
git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@412 b68d4a1b-bc3d-0410-92ed-d4ac073336b7