minidump_stackwalk should use MinidumpProcessor (#64). r=bryner

- minidump_stackwalk is now much more useful as a debugging tool and
   even as a standalone tool.
 - Reimplementation of minidump_stackwalk around MinidumpProcessor.
 - minidump_stackwalk displays all pertinent information returned by
   MinidumpProcessor in the ProcessState.
 - New PathnameStripper::File static utility method to display only the
   leaf file name in a pathname, cleaning up minidump_stackwalk's output.
 - New SimpleSymbolSupplier class, which implements a simple
   filesystem-based symbol supplier compatible with the layout used by
   Microsoft Symbol Server and its client cache.
 - minidump_stackwalk now accepts an optional second argument, a pathname
   to use as a symbol directory for a SimpleSymbolSupplier.
 - Updated test data to be compatible with SimpleSymbolSupplier, and added
   test data for kernel32.pdb.  Test data converted from CRLF line endings
   to LF.

http://groups.google.com/group/airbag-dev/browse_thread/thread/cce30a84f6b2d728


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@53 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/processor/minidump_stackwalk_test

@@ -30,7 +30,8 @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 testdata_dir=$srcdir/src/processor/testdata
-./src/processor/minidump_stackwalk $testdata_dir/minidump1.dmp | \
- tr -s '\015' '\012' | \
- diff -u $testdata_dir/minidump1.stack.out -
+./src/processor/minidump_stackwalk $testdata_dir/minidump2.dmp \
+                                   $testdata_dir/symbols | \
+ tr -d '\015' | \
+ diff -u $testdata_dir/minidump2.stackwalk.out -
 exit $?