replaced File.check by specific File.check_file, File.check_dir;
clarified File.full_path -- include parts of former Thy_Load.get_file;
simplified Thy_Load.check_file -- do not read/digest yet;
merged Thy_Load.check_thy/deps_thy -- always read text and parse header;
clarified Thy_Header.read -- NB: partial Path.explode outside of args parser combinator;
Thy_Info.check_deps etc.: File.read exactly once;
syntax: glob
*~
*.class
*.jar
.DS_Store
syntax: regexp
^contrib
^heaps/
^browser_info/
^doc-src/.*\.aux
^doc-src/.*\.bbl
^doc-src/.*\.blg
^doc-src/.*\.dvi
^doc-src/.*\.idx
^doc-src/.*\.ind
^doc-src/.*\.lof
^doc-src/.*\.log
^doc-src/.*\.out
^doc-src/.*\.rai
^doc-src/.*\.rao
^doc-src/.*\.toc
^src/Tools/jEdit/nbproject/private/
^src/Tools/jEdit/build/
^src/Tools/jEdit/dist/
^src/Tools/jEdit/contrib/