Remove APInt::extractBit since it is already implemented via operator[]. Change tests for extractBit to test operator[].

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197277 91177308-0d34-0410-b5e6-96231b3b80d8
comment typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197278 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed a bug in getARMFixupKindMachOInfo() where three ARM fixup kinds
were falling into the cases for 24-bit branch kinds which are not 24-bit
branches.  The routine is to return false for fixups are expected to always
be resolvable at assembly time. Which these three fixups are as they have
limited displacement and are for local references within a function.

rdar://15586725


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197282 91177308-0d34-0410-b5e6-96231b3b80d8