Linux dumper: Don't switch to wrong source file when starting new function.
Linux dumper: Don't switch to wrong source file when starting new function.

In STABS, if one function's line number information contains an N_SOL
entry to switch to a new source file, then the next function's line
data should pick up in the same source file where the prior function
left off.  However, the Linux dumper restarts each function in the
compilation unit's main source file.  This patch fixes that, so that
the output attributes the lines in subsequent functions to the correct
source files.

a=jimblandy
r=nealsid


git-svn-id: 7939527bf0a06ad24ad020f729d5600cb42ed5d7@373 4c0a9323-5329-0410-9bdc-e9ce6186880e

mikewied/breakpad,mikewied/breakpad,mikewied/breakpad,mikewied/breakpad,mikewied/breakpad,mikewied/breakpad