When generating JSON output, and when no hosts are found when
probing, the generated JSON was malformed. (i.e. when the "hubs" list
in the generated JSON is empty, there was no closing bracket.) This can
be reproduced by tracing to an unused host address on the local subnet.
This fixues issue #190.
The 'indent' tool is confused by some strange #ifdef structure
around HAVE_IPINFO in report.c. Cleaned up that structure
so 'indent' can be used successfully.
Cleaned up the directory structure.
Moved the source to the main mtr executable into the ui/ subdirectory.
Moved mtr.bat and mangen.sh into build-aux/
Moved the man pages into man/
Fixed a few omissions in Makefile.am for 'make dist'