[llvm] [yaml2obj][XOFF] Update yaml2obj for XCOFF to create valid XCOFF files in more cases. (PR #77620)

[James Henderson via llvm-commits]

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@@ -0,0 +1,156 @@
+## Case 1: an error is reported when FileOffsetToData is too small
+## RUN: not yaml2obj --docnum=1 %s -o %t 2>&1 | \
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jh7370 wrote:

`##` is for comments. `#` for lit/FileCheck directives.

https://github.com/llvm/llvm-project/pull/77620