New improvements, changes and all the fish for 0.5.0.
* Synced proplib code with NetBSD HEAD, which replaces the red-black
tree implementation and checks for NULL pointers passed in to the
_dict/_array functions.
* The _zfile functions in the API are now encapsulated into its own
file, that way upstream changes are merged easily.
* The list of public API exported symbols is now handled via libtool's
-exported-symbols option so that local symbols don't pollute the API.
* Explicitly require a C99 compiler. Don't want to waste time in non
C99 compilers.
* Build with Stack Smashing Protection if supported by the compiler,
and a bunch of compiler warnings.
21 files changed: