Apply text_debug_bias to inline IP extracted from dwarf3
Without this biasing, inline info is not correct for shared objects.
Updated test varinfo5 to use --read-inline-info=yes and added
an inline test case. 
Note: the varinfo reader does not understand the inlining info, and
so variables in inlined functions are not properly described.



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14146 a5019735-40e9-0310-863c-91ae7b9d1cf9