Coccigrep

* Remove matched information from context lines (Guillaume Nault)
* Fix issue with single concurrency run (Eric Leblond)
* Prepare 1.6 release. (Eric Leblond)
* Fix context group separation (Guillaume Nault)
* Fix docstring typo (Guillaume Nault)
* Change field separator for context lines (Guillaume Nault)
* Fix compatibility with python 2.5. (Eric Leblond)
* Add a separator between blocks of matched lines (Guillaume Nault)
* Avoid context line duplication (Guillaume Nault)
* Add missing information in CocciMatch::display() docstring (Guillaume Nault)
* Fix context line numbers (Guillaume Nault)

* Allow specyfing a list of input files via a file (-l / --file-list) (Thomas Graf)
* Fix unmatched patterns when using option "--operation=set" (Guillaume Nault)

* Detect attribute setting with unary operator. (Eric Leblond)
* Manpage update: describe option "-o, --operation" (Guillaume Nault)
* Improve manpage (Guillaume Nault)

* Add manpage for coccigrep. (Guillaume Nault)

* unprint cmd (Phlogistique)

* Add C++ support. (Eric Leblond)
* Add 'Revision' info to cocci patches. (Eric Leblond)
* Add 'Arguments' list in cocci patches. (Eric Leblond)
* Add 'Arguments' as a keyword for cocci comment. (Eric Leblond)
* Add information about -L -v in help message. (Eric Leblond)
* Fix trivial typo. (Eric Leblond)
* Use python from env. (Eric Leblond)
* '-L -v' now display a list of operations description. (Eric Leblond)
* Prepare print of operations informations. (Eric Leblond)
* Add class to get information from cocci patch. (Eric Leblond)