[PECOFF] Do r217639 leftover.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@217645 91177308-0d34-0410-b5e6-96231b3b80d8
[mach-o] support "0x" or "0X" as prefix on hex numbers on command line

This matches the strtoull() behavior in ld64.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@217650 91177308-0d34-0410-b5e6-96231b3b80d8
Add FreeBSD to system-linker-elf case


git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@217672 91177308-0d34-0410-b5e6-96231b3b80d8
Make anonymous namespace as small as possible.

LLVM coding style says that "static" is preferred for file-scope
functions.

Differential Revision: http://reviews.llvm.org/D5323

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@217692 91177308-0d34-0410-b5e6-96231b3b80d8