v0.5.2

This release includes a number of bugfixes and performance enhancements

lcm-logger:
exit when disk full
use GLib regexes if they're available.
Add --invert-channels / -v flag

lcm-java:
Make LCMTypeDatabase public
LCM fragmentation: guard against receiving same fragment twice
lcm.lcm.LCM: allow passing NULL or the empty string to the constructor to
explicitly specify default LCM provider.
lcm.lcm.LogFileProvider: bugfix for write mode
remove lcm.test.SlowLCMSubscriber

lcm-gen:
general
warn if struct has 'int' member type instead of 'intN_t'
add options --csharp-strip-dirs and --csharp-root-nsp
Python - generate valid code on empty LCM type
only emit new_parents in _get_hash_recursive if necessary
fix init.py imports.
Check for "from import " instead of "import "
lock init.py when writing
C#
miscellaneous bugfixes
Java
trust explicit array length field, not .length attribute.
fix copy which copied in the wrong direction
faster arraycopy in several instances.

miscellaneous:
add lcm-lite implementation
modify examples -- place LCM types in package "exlcm"
add tutorial-dotnet.sgml to Makefile

Windows & .NET:
LCM.NET - fix unsubscribe bug
portability fixes