v0.7.1

This is a bugfix and maintenance release.

lcm-gen:
C++:
- fix decoding of zero-length primitive arrays (re issue #38)
- computeHash() omit parameter name if unused
- don't #include a type's own header file for recursive types
- fix memory leak in LCM::publish() (re issue #35)
- inline methods for generated code
- use static local variable for getHash() to reduce liblcm dependency of
generated C++ code
- #include if a type has a string field
C:
- don't #include a type's own header file for recursive types
Java:
- add --with-jardir=DIR option to configure script to allow configuring
lcm.jar destination directory.
General:
- update lcm-gen manpage to document --c-no-pubsub

lcm-java:

• ClassDiscoverer doesn't try to traverse unreadable files/directories