343902  --vgdb=yes doesn't break when --xml=yes is used

Changes ensures that gdbserver is called also when xml is yes.
When gdbserver is set to yes, we have to temporarily reset 
xml output to no, as gdbserver output (e.g. print the last error)
has to be printed to gdb.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15031 a5019735-40e9-0310-863c-91ae7b9d1cf9
3 files changed