i#1551 Port DynamoRIO to ARM: update emit_utils to build on ARM
- move x86-specific code into x86/emit_utils.c

BUG=1551
R=bruening@google.com

Review URL: https://codereview.appspot.com/175180043

git-svn-id: https://dynamorio.googlecode.com/svn/trunk@3004 49cc7528-f6fd-11dd-9d1a-b59b2e1864b6
7 files changed