time for a commit.

lots and lots of changes, including:
* c++ plugins skip over #if0 blocks
* general/contractions much improved and c++-independent
* general/spelling much improved and c++-independent
* krazy2 reads a .krazy at the subdir level (i.e., the same one used by EBN)
* support the idea of "extra" checkers that aren't run by default
* code reuse with Perl modules
* the start of a .krazy POD doc (krazyrc.pod)
* better Makefiles
* and more!