WPP

This version includes post- and pre-processing filters (-f and -F switches), and a WPP::call() method for inlined scripts.

This release adds wpplib, a standard macros library for WPP. A config
file can now be placed into subdirs, and it will be included and
merged with the main one only for files contained in that
subdirectory. XHTML output has been added for builtin macros through
the -x or -xhtml switches or the builtin macro XHTML_OUTPUT. Macro
overloading has been added; the same macro can now be defined multiple
times with a different number of parameters. DEFAULT_TMPLPATH and
TMPLPATH have replaced DEFAULT_TMPLDIR and TMPLDIR; you can now
specify multiple template paths.

The last "chop" calls were replaced with safer "chomp". The '\n' within macros declared in config files now are kept as in raw and tmpl files. New built-in macros were added: EVAL and RANDOM.

This release fixes a bug in the macro declaration parsing block which caused parsing to fail if extra spaces were entered after the bracket, and a bug in depend mode where file dependencies were printed before a valid makefile target in some circumstances.

Fixes for a macro argument expansion bug inside the IF test and a serious bug in nested macro expansion (now the macro arguments prefix used internally by wpp is randomized), new built-in macros FILE_SIZE, FILE_DATE, and SYSTEM, a customizable DATE format through the DATE_FORMAT variable, and the output file was stripped of leading spaces and empty lines.