Document external directories
Document MKDEBUG and MKDEBUGLIB
Document MKCROSSGDB, MKKDEBUG and build.sh kernel.gdb=
Use the scratch page, not zero, to clear ggtt entries for gen<6.
Use correct value for gtt->gtt_bsh in agp case (unused, so harmless).
Fix page/byte sense of AGP GTT parameter calculations.
Remove (bad) debugging message that crept into i915_gem_gtt_init.
Make it compile without options DIAGNOSTIC by removing a variable only set
once and only tested once in an assert.
Create /var/tmp for vi. Pointed out by Izumi Tsutsui.
Move declarations of getdelim() and getline() from the (incorrect) ANSI C
section to POSIX-2008.  From Jarmo Jaakkola in PR standards/48788.
Import compiler-rt r209132. Revert use of TI mode on 32bit PPC.
Factor out some common code (more to be done) from PR/48821
Add ability to have mbufs disappear (to another interface) during
npf_rproc_run().  For upcoming npf_ext_route extension.

Guidance and ok by rmind@.
add npf_ext_param_string()
more tty modes refactoring, no functional change intended.
Constify kcpuset_countset() and cpu_index() parameters.
PR/48821: If called from tty_stty(), recalculate flags.
Var_Parse: endc only counts when at the correct nesting depth.
This ensures we correctly detect errors like:
.if empty(VAR && !empty(FOO)

Var_Subst: if Var_Parse returns var_Error it is an error.
This ensures we detect errors like:

VAR:= ${FOO.${GOO}
Implement MI IPI interface with cross-call support.
s/cpu_send_ipi/cpu_ipi/