Merge pull request #64 from sunyc/master

Fix some over aggressive log message.
Merge pull request #65 from sunyc/master

Remove the obsolete qsort implementation.
Merge pull request #67 from sunyc/master

Fix broken LPC switch, added tests. new option SANE_SORTING
Merge remote-tracking branch 'upstream/next-2.27'
2.27-sunyc-rc1.

Also move the documentation files to root directory.