Implement -e trace=%%stat option

Implement -e trace=%%stat option

linux/*/syscallent*.h part is updated automatically by:

    sed -i '/TSFA\|stat[iu]s/! s/,[[:space:]]\?\([[:space:]]*SEN(.*stat\)/|TSTA,\1/' \
        linux/*/syscallent*.h

* sysent.h (TRACE_STAT_LIKE): New macro.
* syscall.c: Alias TSTA to TRACE_STAT_LIKE around syscallent.h inclusion.
* qualify.c (lookup_class): Add TRACE_STAT_LIKE for "%%stat".
* strace.1 (.SS Filtering): Add information about %%stat syscall class.
* NEWS: Mention this change.
* linux/32/syscallent.h (fstat64, fstatat64, statx): Add TSTA flag.
* linux/64/syscallent.h (fstat, newfstatat, statx): Likewise.
* linux/aarch64/syscallent.h (fstat, lstat, newfstatat, stat): Likewise.
* linux/alpha/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
osf_fstat, osf_lstat, osf_old_fstat, osf_old_lstat, osf_old_stat, osf_stat,
stat, stat64): Likewise.
* linux/arm/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, oldfstat,
oldlstat, oldstat, stat, stat64, statx): Likewise.
* linux/avr32/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, stat,
stat64): Likewise.
* linux/bfin/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldfstat, oldlstat, oldstat, stat, stat64): Likewise.
* linux/crisv10/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldfstat, oldlstat, oldstat, stat, stat64): Likewise.
* linux/hppa/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, stat,
stat64): Likewise.
* linux/i386/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, oldfstat,
oldlstat, oldstat, stat, stat64, statx): Likewise.
* linux/ia64/syscallent.h (fstat, lstat, newfstatat, stat): Likewise.
* linux/m68k/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, oldfstat,
oldlstat, oldstat, stat, stat64, statx): Likewise.
* linux/microblaze/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldfstat, oldlstat, oldstat, stat, stat64): Likewise.
* linux/mips/syscallent-compat.h (bsd43_fstat, bsd43_lstat, bsd43_oldfstat,
bsd43_oldstat, bsd43_stat, posix_fstat, posix_lstat, posix_stat, svr4_fstat,
svr4_fxstat, svr4_lstat, svr4_lxstat, svr4_stat, svr4_xstat, sysv_fstat,
sysv_fxstat, sysv_lstat, sysv_lxstat, sysv_stat, sysv_xstat): Likewise.
* linux/mips/syscallent-n32.h (fstat, lstat, newfstatat, stat, statx): Likewise.
* linux/mips/syscallent-n64.h (fstat, lstat, newfstatat, stat, statx): Likewise.
* linux/mips/syscallent-o32.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldfstat, oldlstat, oldstat, stat, stat64, statx): Likewise.
* linux/powerpc64/syscallent.h (fstat, lstat, newfstatat, oldfstat, oldlstat,
oldstat, stat): Likewise.
* linux/powerpc/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldfstat, oldlstat, oldstat, stat, stat64, statx): Likewise.
* linux/s390/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, stat,
stat64, statx): Likewise.
* linux/s390x/syscallent.h (fstat, lstat, newfstatat, stat, statx): Likewise.
* linux/sh64/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, oldfstat,
oldlstat, oldstat, stat, stat64): Likewise.
* linux/sh/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, oldfstat,
oldlstat, oldstat, stat, stat64): Likewise.
* linux/sparc64/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldlstat, stat, stat64): Likewise.
* linux/sparc/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64,
oldlstat, stat, stat64): Likewise.
* linux/x32/syscallent.h (fstat, lstat, newfstatat, stat, statx): Likewise.
* linux/x86_64/syscallent.h (fstat, lstat, newfstatat, stat, statx): Likewise.
* linux/xtensa/syscallent.h (fstat, fstat64, fstatat64, lstat, lstat64, stat,
stat64, statx): Likewise.
* tests/gen_tests.in (trace_stat_like): New entry.
* tests/trace_stat_like.in: New file.
* tests/Makefile.am (EXTRA_DIST): Add it.
* tests/ksysent.c (TSTA): New macro, defined to 0.
* tests/nsyscalls.c: Likewise.