* MSan added with fixes for libc++
* libc++ sepatare build
* add libc++ to ci
* libstdc++ in CI
* libcpp and msan to external projects
* std::sqrt
* awful_hack(ci): install whole llvm instead of libc++ in terrible way for test containers
* Adding ddeb packages for teststages and repos
* libc++ more for test container
* save some money on debug
* colored coredumps
* revert ci
* chore(ci): collect asan ubsan and libc++ build with mtr and regression status ignored
* Fix clang warnings
* Remove vim tab guides
* initialize variables
* 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length
* Fix ISO C++17 does not allow 'register' storage class specifier for outdated bison
* chars are unsigned on ARM, having if (ival < 0) always false
* chars are unsigned by default on ARM and comparison with -1 if always true
Went down the list in shmkeys.h, added sane error msgs on perms
errors accessing rest of the shmsegs there.
Realized we probably do need 666 to the shmsegs.
Also deleted a little dead code that was copy-pasted everywhere.