MC: support passing search paths to the IAS

This is needed to support inclusion in inline assembly via the
`.include` directive.

llvm-svn: 291085
diff --git a/llvm/test/MC/AsmParser/include/module.x b/llvm/test/MC/AsmParser/include/module.x
new file mode 100644
index 0000000..e93c615
--- /dev/null
+++ b/llvm/test/MC/AsmParser/include/module.x
@@ -0,0 +1,3 @@
+
+MODULE = 1
+