Courgette: Extend pointer detection in x64.

These new instructions are now recognised in x64 RelFinder :
MOV QWORD[rip+offset], reg
MOV reg, DWORD[rip+offset]
MOV DWORD[rip+offset], reg
LEA reg, DWORD[rip+offset]
MOV reg, WORD[rip+offset]
MOV WORD[rip+offset], reg
LEA reg, WORD[rip+offset]

This reduces patch size by ~1% for x64 image files.

BUG=623674

Review-Url: https://codereview.chromium.org/2072093003
Cr-Commit-Position: refs/heads/master@{#402517}
5 files changed