Minor improvements in debug printing for stabs reading.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13439 a5019735-40e9-0310-863c-91ae7b9d1cf9
Merge r13421:HEAD from branches/DISRV.  This merges the debuginfo-server
stuff into the trunk.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13440 a5019735-40e9-0310-863c-91ae7b9d1cf9