Move copy_headers.sh and formath.sh from root.
Debian: use default build dir (obj-x86_64-linux-gnu)
Debian: add test after build (GLIBC_required_version)
cmake: dont run copy headers if already copied
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].
* Embedded compiler: development [#CLICKHOUSE-3396].