Fix 338698  race condition between gdbsrv and vgdb on startup



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14475 a5019735-40e9-0310-863c-91ae7b9d1cf9
Partial bypass for 338803 Handling of dwz debug alt files or cross-CU is broken

This patch avoids dereferencing absori that are in other CUs than
the CU currently being read.
This avoids dwarf reading errors when reading inlined information.
The bypass results in inlined function being reported as
UnknownInlinedFun rather than the real correct function name.

--read-var-info=yes is still broken for unknown reasons
(probably type reading is doing some other cross-CU references ?).




git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14476 a5019735-40e9-0310-863c-91ae7b9d1cf9