Make it clear in the help that "breakpoint command add" will act on the last set
breakpoint if no breakpoint id is specified.

<rdar://problem/17885160>


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@216637 91177308-0d34-0410-b5e6-96231b3b80d8
lldb - towards AArch64 being recognised as platform architecture

See http://reviews.llvm.org/D4381.

Change by Paul Osmialowski.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@216668 91177308-0d34-0410-b5e6-96231b3b80d8
Merge upstream llvm.org r216668 into dev-llgs-local