new: usr: Keymap for /msg command
chg: dev: setPromt() clears prompt before setting it
Merge pull request #142 from donat-b/at

Keymap for /msg command
Fix dig glitch when no THREAD_LOCAL avail
chg: correct CONTENT_* values
fix: c++11 features detect
fix: comment
Merge remote-tracking branch 'upstream/master' into next

Conflicts:
	src/CMakeLists.txt
	src/mapblock.cpp
Merge remote-tracking branch 'upstream/master' into next