Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
* configure.tgt: Handle tic6x-*-*linux and tic6x-*-*.
* solib-dsbt.c: New file. Support DSBT shared object.
* tic6x-linux-tdep.c: New file.
* tic6x-tdep.c: New file.
* tic6x-tdep.h: New file.