Some more 64bit function eradication.

  . Replace 64bit funcions with operators in arch_clock.c
  . Replace 64bit funcions with operators in proc.c
  . Replace 64bit funcions with operators in vbox.c
  . Replace 64bit funcions with operators in driver.c
  . Eradicates is_zero64, make_zero64, neg64

Change-Id: Ie4e1242a73534f114725271b2e2365b2004cb7b9
Fix file permissions
Drop obsolete <minix/compiler.h> and <minix/crtso.h>

Change-Id: I05da32bd2bdf014b6fd5c39d6e808d3c73812dc0
Env_memory_parse: move into VM

Only possible user of that function.
While here, fix bug about NR_MEMS vs MAXMEMMAP
NR_MEMS=16 is currently less than MAXMEMMAP=40; avoid overriding
ahci: make 64-bit native
blocktest: make 64-bit native
Add VM_GETRUSAGE to VM_BASIC_CALLS

This unbreaks test75.

Change-Id: I71539f941b9a4ee5e7f57de2ee9adaeab4d2730e
VM: support for shared call mask ACLs

The VM server now manages its call masks such that all user processes
share the same call mask. As a result, an update for the call mask of
any user process will apply to all user processes. This is similar to
the privilege infrastructure employed by the kernel, and may serve as
a template for similar fine-grained restrictions in other servers.

Concretely, this patch fixes the problem of "service edit init" not
applying the given VM call mask to user processes started from RC
scripts during system startup.

In addition, this patch makes RS set a proper VM call mask for each
recovery script it spawns.

Change-Id: I520a30d85a0d3f3502d2b158293a2258825358cf
Remove VM_VFS_REPLY from VM_BASIC_CALLS

Change-Id: I0a03f1c95fd7ef87cecb01a028f59696a8447738
libc: make MINIX assembly code position-independent

While here, simplify ucontext.S

	. makes libc link without the messy DT_TEXTREL warning.

Change-Id: I4656d9068eab5ed2fa1e391242883d5dd9d93644
tps65950: driver for the TPS65950 PMIC

Change-Id: I6b6163e59233d1f823f03550b949d53e1738a7f4
readclock: code clean-up, add -q, manpage updates

 - Simplify the message passing between readclock and the driver.

 - Add a -q command line option to suppress warning messages. This
 cuts down on the noise when readclock is called early in the boot
 sequence and a secondary RTC driver (ex TPS95650) isn't up yet.

 - Update the man page to be less i386 centric and add details about
 the new -q option.

Change-Id: If8d7c50a217ca98c1e9fae0ca92521e2e7c893e4
readclock.drv: add support for the TPS65950 RTC

On the BeagleBoard-xM, the RTC is located on the Power Management IC
(PMIC). To keep things consistent, access to the PMIC's RTC is done
through the readclock driver. The readclock driver forwards the request
on to the TPS65950 driver which does the work of manipulating the
registers on the chip.

Change-Id: I53cefbb59c5a9ab87fab90df3cc1a75a6e430f58