12046 Provide /proc/<PID>/fdinfo/

*** 505,515 ****
          sl_field_t              version;
          sl_field_t              machine;
  } sl_utsname_layout_t;
  
  /*
!  * Layout description of prdinfo_t, from <sys/procfs.h>.
   */
  typedef struct {
          sl_field_t              sizeof_struct;
          sl_field_t              pr_fd;
          sl_field_t              pr_mode;
--- 505,515 ----
          sl_field_t              version;
          sl_field_t              machine;
  } sl_utsname_layout_t;
  
  /*
!  * Layout description of prfdinfov1_t, from <sys/procfs.h>.
   */
  typedef struct {
          sl_field_t              sizeof_struct;
          sl_field_t              pr_fd;
          sl_field_t              pr_mode;