Log Message:
Update libsndfile to 1.0.26:

Version 1.0.26 (2015-11-22)
  * Fix for CVE-2014-9496, SD2 buffer read overflow.
  * Fix for CVE-2014-9756, file_io.c divide by zero.
  * Fix for CVE-2015-7805, AIIF heap write overflow.
  * Add support for ALAC encoder in a CAF container.
  * Add support for Cart chunks in WAV files.
  * Minor bug fixes and improvements.