[tests] Use multiple statements instead of 'echo -e', which is not part of BSD echo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189560 91177308-0d34-0410-b5e6-96231b3b80d8

test/Linker/transitive-lazy-link.ll

 ; @f and @g are lazily linked. @f requires @g - ensure @g is correctly linked.
 
-; RUN: echo -e "declare i32 @f(i32)\ndefine i32 @h(i32 %x) {\n%1 = call i32 @f(i32 %x)\nret i32 %1\n}" | llvm-as >%t.1.bc
+; RUN: echo "declare i32 @f(i32)" > %t.1.ll
+; RUN: echo "define i32 @h(i32 %x) {" >> %t.1.ll
+; RUN: echo "  %1 = call i32 @f(i32 %x)" >> %t.1.ll
+; RUN: echo "  ret i32 %1" >> %t.1.ll
+; RUN: echo "}" >> %t.1.ll
+; RUN: llvm-as < %t.1.ll > %t.1.bc
 ; RUN: llvm-as < %s > %t.2.bc
 ; RUN: llvm-link %t.1.bc %t.2.bc