Next round of fixes.

MFC after:	3 days
Modify a few output file names as used with vt.

MFC after:	3 days
Rename DT_FEATURE_1 to DT_FEATURE

This provides a minor cleanup in elfdump; there are otherwise no
consumers in the tree.  Old SUN documentation can be found for either
variant, but GNU binutils switched to DT_FEATURE around 2000.

Sponsored by:	The FreeBSD Foundation
elfdump: Remove extraneous _SUNW_ in reported DT_ names

Sponsored by:	The FreeBSD Foundation
Add the Samsung 843T as a 4k enabled drive

Submitted by:	Jason Wolfe <jason@llnw.com>
MFC after:	2 weeks
Sponsored by:	Limelight Networks
This module requires pci_if.h, add it to the SRCS list.

We haven't noticed that it was missing because eisa has been disabled for
a while in -current, but it became apparent when some parallel-build stuff
was MFC'd to 10-stable and this module failed to build there.
Include two headers to provide prototype for modfind(2) and kldload(2).

MFC after:	2 weeks
Fix powerpc build:

Chase r270227 and compile lockstat with C99 standard.

Suggested by:	bde