The function was used only within Relocations.cpp, but now we are
using it in many places, so this patch moves it to a file that fits
to the functionality.

llvm-svn: 287943

Differential revision: https://reviews.llvm.org/D26914

llvm-svn: 287750

llvm-svn: 287452

llvm-svn: 287451

According to the specification, CIE code alignment factor is an
arbitrary unsigned LEB128 encoded value.

Differential revision: https://reviews.llvm.org/D22954

llvm-svn: 277105

"A zero length string indicates that no augmentation data is present."

The FreeBSD/mips toolchain (GCC 4.2.1) generates .debug_frame sections
containing CIE records that have an empty augmentation string.

Differential Revision: http://reviews.llvm.org/D19928

llvm-svn: 270706

llvm-svn: 270526