Update the pciconf(8) database.

September 14, 2013 snapshot from http://pciids.sourceforge.net/
drm.4: Fix some mandoc warnings which I introduced.
mxge: Make detach suitable for error handling and fix attach error handling
<sys/cdefs.h>: Fix the _Static_assert compatiblity macros.

Remove the typedef hack (which was like our CTASSERT()). Emacs was
choking on it because it is using _Static_assert like this (in verify.h):

#define _GL_VERIFY_TYPE(R, DIAGNOSTIC)  \
     struct {                           \
       _Static_assert (R, DIAGNOSTIC);  \
       int _gl_dummy;                   \
     }

GCC supports it since 4.6, so take that into account too.
make.1: correct a few style issues
mxge: Cleanup if_init path
mxge: Cleanup stop path
mxge: Cleanup slice open code
mxge: Fix small buf allocation

- MB_WAIT should be used to allocate mbuf.
- m_freem() instead of m_free() should be called if busdma error happens.
- During initialization, there is no mbuf to be recycled; just return
  error.
mxge: Limit MTU to ~4K

Various code for "gather" jumbo frame is just broken; limiting MTU to 4K
(MJUMPAGESIZE) should workaround this.
mxge: Fix big buf allocation

- MB_WAIT should be used to allocate mbuf.
- m_freem() instead of m_free() should be called if busdma error happens.
- During initialization, there is no mbuf to be recycled; just return
  error.
HAMMER - Fix VFS_STATFS() after volume-add.

* Make sure the new free bigblocks count is accurate
  when a volume is added to a HAMMER filesystem.
hammer - Unbreak buildkernel
mxge: Cleanup probe code
ifpoll: Use tsc_invariant consistently
mxge: Constify various const strings
mxge: Clean up RX path
mxge: inline -> __inline
mxge: Cleanup TX descriptor capsulation
mxge: Remove several unused fields in softc