Use VG_(fdprintf).


git-svn-id: svn://svn.valgrind.org/valgrind/branches/BUF_REMOVAL@14270 a5019735-40e9-0310-863c-91ae7b9d1cf9
Audit buffer sizes; increase one.


git-svn-id: svn://svn.valgrind.org/valgrind/branches/BUF_REMOVAL@14271 a5019735-40e9-0310-863c-91ae7b9d1cf9