Merge pull request #1 from openchange/master

Merge upstream master
Include an option to dump the stacktrace to a file

Use -f flag and the name of the file will be the same of the crash
appending .stacktrace extension
Guess the components and store it in the stacktrace

with -f option
Merge pull request #39 from sixstone-qq/ejhernandez/bug-analysis-tool-enh

Added -f flag to crash retrace tool