Import bmake-20121010
Relevant items from ChangeLog:
          o [Makefile.in:] protect syntax that only bmake parses correctly.
          o compat.c: ignore empty commands - same as jobs mode.
          o make.1: document meta chars that cause use of shell

Approved by:	marcelm (mentor)
Tag bmake/20121010

Approved by:	marcel (mentor)
Prevent including .zfs snapshot directories in the src.txz
distribution.  This can happen if the src/ tree checkout is
within its own ZFS dataset, and the 'snapdir' ZFS property
is set to 'visible.'

Approved by:	hrs
MFC after:	3 days
X-MFC-To:	stable/9 only
Remove this; i incorrectly committed the wrong (debug) changes in my
previous commit.
Correctly fix the 'scan during STA mode' crash.
Correct date of Stanley's encounter with Livingstone.

Obtained from:	Henry Morton Stanley, "How I met Livingstone", http://www.gutenberg.org/dirs/5/1/5/5157/5157-h/5157-h.htm
MFC after:	14 days
Tweak comments.

In collabouration with:	alc
Fix DDB command "show map XXX":
- Check that an argument is always available, otherwise current map
  printing before to recurse is garbage.
- Spit out a message if an argument is not provided.
- Remove unread nlines variable.
- Use an explicit recursive function, disassociated from the
  DB_SHOW_COMMAND() body, in order to make clear prototype and recursion
  of the above mentioned function.  The code results now much less
  obscure.

Submitted by:	gianni
Allow this file to be used in LOCORE sections of the kernel.
Add new USB IDs.

MFC after:	1 week
PR:		usb/173503
Clarify where the authorized_key file lives.

Approved by:	bcr (mentor)
MFC after:	3 days
Update MAX_TASKS to scale a bit based on MAXCPU

This alleviates issues on newer Sandy/Ivy Bridge gear that seems to require
boatloads more ACPI resources than before.

Reviewed by:	avg@
Obtained from:	Yahoo! Inc.
MFC after:	2 weeks
Fix a stack leak in [unused] cycle_menuitem function while we're here
(required misconfiguration and/or missing environment vars to occur).

Reviewed by:	peterj, adrian (co-mentor)
Approved by:	adrian (co-mentor)
 - Fix a bug that has existed since the original softdep implementation.
   When a background copy of a cg is written we complete any work associated
   with that bmsafemap.  If new work has been added to the non-background
   copy of the buffer it will be completed before the next write happens.
   The solution is to do the rollbacks when we make the copy so only those
   dependencies that were present at the time of writing will be completed
   when the background write completes.  This would've resulted in various
   bitmap related corruptions and panics.  It also would've expired journal
   entries early causing journal replay to miss some records.

MFC after:	2 weeks
Merge of vendor import of 242925, tzdata2012i

Update to tzdata2012i:
- Cuba is changing back to Standard Time on 4 November 2012.
Fix a minor warning in sys/i386/xen/clock.c.

MFC after:	3 days
Redo r242842, now actually fixing the warnings, as follows:
- In sys/ofed/drivers/infiniband/core/cma.c, an enum struct member is
  interpreted as an int, so cast it to an int.
- In sys/ofed/drivers/infiniband/core/ud_header.c, initialize the
  packet_length variable in ib_ud_header_init(), to prevent undefined
  behaviour.
- In sys/ofed/drivers/infiniband/ulp/sdp/sdp_rx.c, call rdma_notify()
  with the correct enum type and value.
- In sys/ofed/include/linux/pci.h, change the PCI_DEVICE and PCI_VDEVICE
  macros to use C99 struct initializers, so additional members can be
  overridden.

Reviewed by:	delphij, Garrett Cooper <yanegomi@gmail.com>
MFC after:	1 week
Redo r242889, now using the method from projects/amd64_xen_pv r240747.

Reminded by:	kib
MFC after:	3 days
Add a callback function to userboot.so to fetch a list of environment
variables and pass them to the kernel.

Reviewed by:	dfr
Set optimized_out instead of reporting an error.

This provides a better display when debugging code compiled with
optimization on.

GDB git revision e8395b4efd184f745070afb953f451f99e922be7 (prior to GDB's
switch to GPLv3), modified for the interfaces provided by GDB 6.1.1.

2005-02-28  Daniel Jacobowitz  <dan@codesourcery.com>

 * dwarf2loc.c (loclist_read_variable): Set optimized_out
 instead of reporting an error.
 * valprint.c (value_check_printable): New function.
 (common_val_print): New function.  Use value_check_printable.
 (value_print): Use value_check_printable.
 * value.h (common_val_print): Add prototype.
 * c-valprint.c (c_val_print): Use common_val_print.
 * cp-valprint.c (cp_print_value_fields): Likewise.
 (cp_print_hpacc_virtual_table_entries): Likewise.
 * f-valprint.c (f_val_print): Likewise.
 * jv-valprint.c (java_value_print, java_print_value_fields):
 Likewise.
 * scm-valprint.c (scm_value_print): Likewise.
 * stack.c (print_frame_args): Likewise.
 * varobj.c (c_value_of_variable): Likewise.
 * p-valprint.c (pascal_val_print, pascal_value_print): Likewise.
 (pascal_object_print_value_fields): Likewise.  Update call to
 pascal_object_print_static_field.
 (pascal_object_print_static_field): Remove TYPE argument.  Use
 common_val_print.

Sponsored by:	ADARA Networks
MFC after:	1 month