Original patch by Mario Lang
Heavily updated by Igor Poretsky
Further updated by myself

  This patch breaks binary API compatibility by placing the new
  functions where they make the most logical sense. IMO this is
  the better approach to take given the scope of the changes needed
  for talk support.

  Since binary API is changing, the patch also moves some other
  functions around to more logical locations.

  As well as voice support in plugins, this patch voice-enables several
  simple plugins.  There will be follow-up patches for many plugins that
  build on this one.

Change-Id: I18070c06e77e8a3c016c2eb6b6c5dbe6633b9b54

Unifies time formatting in settings_list.c allows time format to
display as HH:MM:SS.MSS or any consecutive combination thereof
(hh:mm:ss, mm:ss, mm:ss.mss, ss.mss, hh, mm, ss ,mss)
works in INT and TABLE settings with the addition of flag 'F_TIME_SETTING'

Time is auto-ranged dependent on value

Adds talk_time_intervals to allow time values to be spoken similar to
display format:  x Hours, x Minutes, x Seconds, x Milliseconds

Table lookups merged or removed from recording, clip meter and lcd timeout
-String_Choice replaced with TABLE_SETTING or INT_SETTING for these
functions as well, cleaned-up cfg_vals that get saved to cfgfile

RTL Languages ARE supported

Negative values ARE supported

Backlight on/off are now Always and Never to share formatter with LCD
Timeout

Added flag to allow ranged units to be locked to a minimum index

Added flag to allow leading zero to be supressed from the largest unit

merged talk_time_unit() and talk_time_intervals()

optimized time_split()

optimized format_time_auto()

Backlight time-out list same as original

Change-Id: I59027c62d3f2956bd16fdcc1a48b2ac32c084abd

Change-Id: I7abed5dab9b4d0d053c274404dc4dc06864aa060

Modified from original ticket, Taken from Igor Poretsky's tree, and
further modified by myself to incorporate feedback.

Change-Id: Ibc2180e52af76890b1448d23f79386fd0f88f709

output_dyn_value now requires the count for number of units

Binary scale now shows Kibibytes instead of kilobytes (g#1742)

Fixes output for negative values as well

Change-Id: I8aa896860e97d2453fa35069e2dfe1caac60109f

Even though the DMA buffer itself does not move the ISR copies from a movable
buffer into the static commit buffer. To ensure this copying yields consistent
data it must not be interrupted by this ISR..

Also bump the commit buffer size to 2k, this should reduce the overhead
considerably because many clips are smaller than that (especially on
swcodec/speex).

Change-Id: I4e1ab83074f31fc91b51a58baa1df55ce659ac73

Change-Id: If3cbcd7557797684f1b7fea8e1bb134777680dee

The voice engine can now request more voice data during decoding, it does
not require the entire clip to be available before start of decoding anymore.
Therefore the commit buffer does not need to hold an entire voice clip anymore,
and can be made greatly smaller.

Change-Id: I3eca9026448e725b9b8d0dae1efca0ad185371da

This unifies the talk.c for all possible voice payload. .talk clips are placed
onto the same unified clip cache, along with normal clips. This allows for more
effecient memory usage.

The cache handling makes a slight difference between normal clips and .talk
ones: .talk clips can be cached multiple and are always freed first.The extra
logic to avoid loading multiple copies of .talks is not necessary because the
will be freed first anyway.

Change-Id: I88d056a0a613b129f5875f50fdb757b58bac0a42

This unifies the talk.c for all targets. The only separation is left is
TALK_PROGRESSIVE_LOAD: When this is defined the talk buffer will not be
initially prefilled. This is useful for super slow storage or when the buffer
is not large enough to prefill it with useful clips (the prefill code could
be made smarter too).

The buffer size can be adjusted. By default lowmem uses 100k while
other targets load the entire file. The bigger the more clips can be cached
but with diminishing returns.

Change-Id: Ife38fb101c53093117e6638c40c65f7d177a31d4