Merge topic 'mark_as_advanced-without-cache'
3ec82b713e cmMarkAsAdvancedCommand: ignore variables which don't exist in the cache
701a5c60e0 cmake: avoid marking local or unused variables as advanced
af158149e7 FindOpenSSL: do not mark a local variable as advanced
74f659f1f2 FindCurses: only mark CURSES_EXTRA_LIBRARY when it is used
7e2ae4e96d FindOpenGL: only mark declared cache variables as advanced
7cc02a0c29 FindLua: only mark LUA_MATH_LIBRARY as advanced if required
85cd26b8a6 FindBoost: only mark Boost_DIR as advanced if defined
338c7916ba CTest: avoid marking undeclared cache variables as advanced
...
Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4150
