Update XZ Utils to 5.0.3 (in deps)

src/liblzma/api/lzma/hardware.h

 /**
  * \file        lzma/hardware.h
  * \brief       Hardware information
  *
  * Since liblzma can consume a lot of system resources, it also provides
  * ways to limit the resource usage. Applications linking against liblzma
  * need to do the actual decisions how much resources to let liblzma to use.
  * To ease making these decisions, liblzma provides functions to find out
  * the relevant capabilities of the underlaying hardware. Currently there
  * is only a function to find out the amount of RAM, but in the future there
@@ skipping 21 matching lines @@
 #ifndef LZMA_H_INTERNAL
 #       error Never include this file directly. Use <lzma.h> instead.
 #endif
 
 
 /**
  * \brief       Get the total amount of physical memory (RAM) in bytes
  *
  * This function may be useful when determining a reasonable memory
  * usage limit for decompressing or how much memory it is OK to use
- * for compressing. For example, the default limit used by the xz
- * command line tool is 40 % of RAM.
+ * for compressing.
  *
  * \return      On success, the total amount of physical memory in bytes
  *              is returned. If the amount of RAM cannot be determined,
  *              zero is returned. This can happen if an error occurs
  *              or if there is no code in liblzma to detect the amount
  *              of RAM on the specific operating system.
  */
 extern LZMA_API(uint64_t) lzma_physmem(void) lzma_nothrow;