Log Message:
Update to 16.1

Changelog:
** MELPA install
** Support Emacs 25
*** Add skk-help-make-usage as wrapper macro
** Development environment
*** Converted from CVS to Git
*** Add test and uninstall target to Makefile and make.bat
** Documentation
*** Rename READMEs/REAME to README.md
*** Convert READMEs/* to UTF-8
*** Generation of PDF file from skk.texi
**** Convert skk.texi to UTF-8
**** Create makepdf.bat and makepdf.sh scripts to PDF generation
** Add prefix ccc- to ccc.el functions etc.
** Remove queue-m.el, use cons() instead
** Remove skk-annotation-browser-function variable
** Add keyboard type nicola-colemak and omelet-colemak