Release v1.2.6

Core
 - Release v1.2.6
 - conf: add safe_strtoll_base() like safe_strtol_base()
 - conf: introduce safe_strtol_base()
 - configure: bumb version to 1.2.6pre1 (for alsactl/alsa-utils)
 - fix build with --disable-ucm
Config API
 - conf: introduce snd_config_load_string()
 - conf: add possibility to evaluate simple integer math expressions
Control API
 - control: remap - assign right name to the child handle for no-op (2nd case)
 - control: remap - assign right name to the child handle for no-op
 - control: Minor documentation fixes.
 - control: Add documentation for snd_ctl_card_* and friends.
 - control: empty - fix the static build
PCM API
 - pcm: softvol - mark _snd_pcm_parse_control_id as static
 - pcm: partially revert "pcm: softvol - make snd_pcm_parse_control_id private"
 - pcm: multi plugin - adjust appl_ptr on rewind/forward operations
 - pcm: add a note about return values of snd_pcm_state()
 - pcm: rate - fix some gcc warnings
 - pcm: direct plugins - fix bad memory access when channel bindings do not match hw
 - pcm: Move snd_pcm_channel_area_addr() and _step() to public header
 - pcm: direct plugins - fix hw_ptr in the status callback
 - pcm: dmix - use pcm_frame_diff() in snd_pcm_dmix_sync_ptr0()
 - pcm: improve docs for snd_pcm_sw_params_get_avail_min() and snd_pcm_status_get_avail_max()
 - pcm: rate: Improve the support multiple formats
 - pcm: rate: Refactoring temporary buffer allocations
RawMidi API
 - rawmidi: allocate the read buffer in the params call
 - rawmidi: free framing read bufffer when the framing mode becomes inactive
 - rawmidi: add support for SNDRV_RAWMIDI_IOCTL_USER_PVERSION
 - rawmidi: return ENOTSUP when timestamp reads are not supported by plugins
 - rawmidi: allow timestamp reads only for the appropriate read mode
 - rawmidi: doc - fix the framing / read mode section
 - rawmidi: rename enum snd_rawmidi_framing to snd_rawmidi_read_mode
 - rawmidi: define more abstract API for the timestamp reads
 - rawmidi: initialize the reserved space in snd_rawmidi_params_default()
 - rawmidi: Add rawmidi framing API
Rawmidi API
 - rawmidi: rename enum snd_rawmidi_framing to snd_rawmidi_read_mode
 - rawmidi: define more abstract API for the timestamp reads
 - rawmidi: Use the standard types for snd_rawmidi_framing_tstamp_t definition
 - rawmidi: Add rawmidi framing API
Topology API
 - topology: do not call strtol directly
Use Case Manager API
 - ucm: add initial doxygen documenation
 - conf: introduce snd_config_load_string()
 - ucm: add ${eval:EXPR} substitution (Syntax 5)
 - ucm: fix parsing of the internal hexadecimal card identifier (2)
 - ucm: fix parsing of the internal hexadecimal card identifier
 - ucm: fix DeviceModifier parser
 - conf: introduce safe_strtol_base()
 - ucm: suppress the no device (no UCM card) errors on request
 - ucm: substitute the before/after identifiers
 - ucm: fix the parsing of the hexadecimal prefix
 - ucm: avoid zero card instance number
/src/Makefile.am
 - conf: add possibility to evaluate simple integer math expressions
Configuration
 - conf: introduce snd_config_load_string()
 - conf: confeval - fix _to_integer error code
 - conf: improve simple integer math expressions - brackets
 - ucm: add ${eval:EXPR} substitution (Syntax 5)
 - conf: add possibility to evaluate simple integer math expressions
 - conf: add safe_strtoll_base() like safe_strtol_base()
 - conf: introduce safe_strtol_base()
Documentation
 - ucm: add initial doxygen documenation
Dynamic Loader helpers
 - dlmisc.c: Avoid double unlock in snd_dlobj_cache_get0()
External PCM Plugin SDK
 - pcm: partially revert "pcm: softvol - make snd_pcm_parse_control_id private"
External Rate Converter Plugin SDK
 - pcm: rate: Improve the support multiple formats
Kernel Headers
 - rawmidi: add support for SNDRV_RAWMIDI_IOCTL_USER_PVERSION
 - asound.h: fix the __packed use for the out-of-kernel code
 - rawmidi: Add rawmidi framing API
Test/Example code
 - conf: introduce snd_config_load_string()
 - conf: fix test/lsb/config.c
 - conf: improve simple integer math expressions - brackets
 - conf: add possibility to evaluate simple integer math expressions
 - rawmidi: rename enum snd_rawmidi_framing to snd_rawmidi_read_mode
 - rawmidi: define more abstract API for the timestamp reads
 - test: rawmidi: Add test for rawmidi framing API

Signed-off-by: Jaroslav Kysela <perex@perex.cz>