textproc/coccigrep: update to 1.19

ChangeLog: https://github.com/regit/coccigrep/releases/tag/v1.19

Accummulated changes:

• Address a issue with pygments installation on Python 2 and fix parallel execution.

• This release fixes #19 and improve matching capabilities. Issue was linked to absolute include (like #include <toto.h>) used in a project instead of the classical relative include (include "toto.h").

Reported by: portscout