…inside packages (#286) (#1769).

* verilog-mode.el (verilog-defun-no-class-re, verilog-do-indent)
(verilog-end-defun-no-class-re, verilog-indent-class-inside-pkg)
(verilog-mode, verilog-submit-bug-report)
(verilog-zero-indent-no-class-re): Add
`verilog-indent-class-inside-pkg' and fix indentation of classes
inside packages (#286) (#1769).  Reported by Gonzalo Larumbe.

Signed-off-by: Gonzalo Larumbe <gonzalomlarumbe@gmail.com>