Better document the limitation of gdbsrv for registers and flags values

During investigations of 303963, Josef found that flags are not always
up to date and that --vex-guest-max-insns=1 ensures flags values
are (more?) correct.

=> enhance the paragraph in the gdbserver limitations to reference
this option and give an idea of the performance impact of the other
options helping to increase the precision of registers and flags.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12778 a5019735-40e9-0310-863c-91ae7b9d1cf9
1 file changed