[PATCH 06/13] perf tools: Fix the bash completion for listing subcommands of perf

The bash completion does not support listing subcommands for 'perf -- '. Example: Before this patch: $ perf --debug $ As shown above, the subcommands of perf does not come out. After this patch: $ perf --debug annotate buildid-cache data evlist inject kvm

[PATCH 06/13] perf tools: Fix the bash completion for listing subcommands of perf

The bash completion does not support listing subcommands for 'perf --long option TAB'. Example: Before this patch: $ perf --debug TAB $ As shown above, the subcommands of perf does not come out. After this patch: $ perf --debug TAB annotate buildid-cache data evlist