* Support for kernel up to 5.11
* allow BCC as a cmake subproject
* add LPORT support in tcpconnlat and tcpconnect
* added bpf_map_lookup_and_delete_batch support
* new tools: virtiostat
* new libbpf-tools: cpufreq, funclatency, cachestat
* add install target to libbpf-tools
* a few lua fixes
* doc update and bug fixes