Plain Markdown support. Directory support.

* Upgraded build common to version 1.9.
* Updated the release target in build.xml to take advantage of the new features
  of common build 1.9. The release target now copies over the libs and release
  resources.
* JLPMain now recognises directories in it's input list. It will add all the
  files in a given directory to the input list (including files in abitrarily
  nested subdirectories).
* Abstracted the parser behavior further. Processor no longer needs to know
  about Parboiled ParseRunners and can use non-Parboiled parsers.
* Created the JLPParser interface to support the new parser abstraction.
* JLPPegParser implements the new interface trivially by creating it's own parse
  runner and calling it with the input given.
* Added MarkdownParser, which does not actually parse the file, just creates the
  bare-bones SourceFile object needed for the generator to emit the Markdown
  contents.

src/main/com/jdblabs/jlp/JLPPegParser.java

@@ -8,9 +8,10 @@ import org.parboiled.BaseParser;
 import org.parboiled.Context;
 import org.parboiled.Rule;
 import org.parboiled.annotations.*;
+import org.parboiled.parserunners.ReportingParseRunner;
 
 @BuildParseTree
-public class JLPPegParser extends BaseParser<Object> {
+public class JLPPegParser extends BaseParser<Object> implements JLPParser {
 
     int curLineNum = 1;
 
@@ -31,6 +32,10 @@ public class JLPPegParser extends BaseParser<Object> {
     public JLPPegParser() {
         this("/**", "*/", "!#$%^&*()_-=+|;:'\",<>?~`", "///"); }
 
+    public SourceFile parse(String input) {
+        ReportingParseRunner rpr = new ReportingParseRunner(this.SourceFile());
+        return (SourceFile) rpr.run(input).resultValue; }
+
     /**
      * Parses the rule:
      *  SourceFile = (Block / DocBlock / CodeBlock)+