Log Message:
Update to 1.19:

1.19 -- Sun Dec 10 09:58:03 CST 2006

Bug Fixes
  * Fix invalid conversion from `const char*' to `char*' warnings
  * Avoid Makefile error when building on Win32
  * Fix undefined symbol error for perl < 5.9.0
  * Fix hardcoded "/" in a filepath that causes p_tainted.t to fail on VMS

Documentation
  * Document that reduce calls BLOCK in a scalar context
  * Add SEE ALSO sections to docs

Enhancements
  * A new regression test for readonly, taking a reference to a constant passed \ 
to a sub