perf tools: Export usage string and option table of perf record

Those are shared with other builtin commands like kvm, script.  So
make it accessable from them.  This is a preparation of later change
that limiting possible options.

Cc: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
4 files changed