Some syscall improvements:
- made pre_mem_read etc. calls more concise by improving the macros used
- made printing calls more concise by renaming the macro used
- updated README_MISSING_SYSCALL_OR_IOCTL
- improved --trace-syscalls=yes;  a bit neater, and now prints return values
  for all syscalls.
- introduced LOHI64 macro for 64-bit args that are created from 2 32-bit args
- 64-bit cleanness tweaks for *xattr* syscall printing


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2941 a5019735-40e9-0310-863c-91ae7b9d1cf9
4 files changed