Make sure that all globals are internal, except for "start" functions.

tests_lit/parse_errs/bad-intrinsic-arg.test

 ; Tests that we correctly check parameter types for intrinsics.
 
 ; REQUIRES: no_minimal_build
 
 ; RUN: not %pnacl_sz -bitcode-as-text \
 ; RUN:     %p/Inputs/bad-intrinsic-arg.tbc \
-; RUN:     -bitcode-format=pnacl -notranslate -build-on-read 2>&1 \
+; RUN:     -bitcode-format=pnacl -notranslate -build-on-read \
+; RUN:     -allow-externally-defined-symbols 2>&1 \
 ; RUN:   | FileCheck %s
 
 ; CHECK: Argument 1 of llvm.nacl.setjmp expects i32. Found: double
 
 ; RUN: pnacl-bcfuzz -bitcode-as-text \
 ; RUN:     %p/Inputs/bad-intrinsic-arg.tbc -output - \
 ; RUN:   | not pnacl-bcdis -no-records | FileCheck -check-prefix=ASM %s
 
 ; ASM: module {  // BlockID = 8
 ; ASM:   declare external i32 @f0(double);
 ; ASM:   valuesymtab {  // BlockID = 14
 ; ASM:     @f0 : "llvm.nacl.setjmp";
 ; ASM: Error(118:0): Intrinsic llvm.nacl.setjmp expects i8* for argument 1. Found: double
 ; ASM:   }
 ; ASM:   function void @f3(i32 %p0, double %p1) {  // BlockID = 12
 ; ASM:     blocks 1;
 ; ASM:   %b0:
 ; ASM:     %v0 = call i32 @f0(double %p1);
 ; ASM:     ret void;
 ; ASM:   }
 ; ASM: }