Log Message:
* Move Canna-server from inputmethod/canna-server to here.

* Put Makefile.common and Makefile.include for common definitions and
  inclusions.

* Update to 3.6p3.  From Toru Takamizu in PR#20208.

  Random summary of changes since 3.6p1.

	* CHANGES.jp: update
	* Fix sample files.
	* Install default.canna to cannaLibDir.
	* Fix cursor handling in tango-touroku.
	* Add "nami" symbol.
	* Prevent wrong learning.  It had occured in two situations:
	   1. bubun kakutei at bunsetsus (probably) except in jishu-henkan mode
	   2. bubun muhenkan
	  In both cases, all bunsetsus had been learned.
	  This commit is only a quick hack. tanbunContext should be removed
	  and new protocol should be added in future.
	* lib/RKC/wconvert.c(SendType11Request): stop buffer overrun
	* server/IR.h: define _WCHAR_t again after include "canna/RK.h"
	  New direcroty hierarchy.
	  Currently old hierarchy is default on stable branch.

  And document/code bug fixes.