Add --nocache option to force a bugzilla query.
Merge pull request #106 from AndrejMitrovic/AddForce

Add --nocache option to force a bugzilla query.
rdmd: Clean up the old executable file before the build starts

The old code attempted to delete the final executable if the build
failed, disregarding potential failure due to it being in use.

Now we safely ensure that the final executable doesn't exist before
we even start building.
Merge pull request #107 from CyberShadow/rdmd-20140109

rdmd: Clean up the right executable file if the build fails
rdmd: Add etc to list of ignored packages

This fixes "The module 'etc.c.curl' is already defined in (program)".
Merge pull request #108 from CyberShadow/rdmd-20140118

rdmd: Add etc to list of ignored packages