Fix run-pass tests to have 'pub fn main'

This is required by the check-fast target because each test is slurped up into a
submodule.

Author: alexcrichton

src/etc/combine-tests.py

@@ -29,6 +29,8 @@ def scrub(b):
         if not ("xfail-test" in s or
                 "xfail-fast" in s or
                 "xfail-win32" in s):
+            if not "pub fn main" in s and "fn main" in s:
+                print("Warning: no public entry point in " + t)
             stage2_tests.append(t)
         f.close()
 

src/test/run-pass/attr-no-drop-flag-size.rs

@@ -20,6 +20,6 @@ impl<T> Drop for Test<T> {
     fn drop(&mut self) { }
 }
 
-fn main() {
+pub fn main() {
     assert_eq!(size_of::<int>(), size_of::<Test<int>>());
 }

src/test/run-pass/borrowck-macro-interaction-issue-6304.rs

@@ -26,4 +26,4 @@ impl Foo {
   fn check_id(&mut self, s: int) { fail!() }
 }
 
-fn main() { }
+pub fn main() { }

src/test/run-pass/borrowck-pat-enum.rs

@@ -43,5 +43,5 @@ fn match_mut_reg(v: &mut Option<int>) {
     }
 }
 
-fn main() {
+pub fn main() {
 }

src/test/run-pass/borrowck-static-item-in-fn.rs

@@ -10,6 +10,6 @@
 
 // Regression test for issue #7740
 
-fn main() {
+pub fn main() {
     static A: &'static char = &'A';
 }

src/test/run-pass/borrowck-unary-move-2.rs

@@ -26,7 +26,7 @@ fn noncopyable() -> noncopyable {
 
 struct wrapper(noncopyable);
 
-fn main() {
+pub fn main() {
     let x1 = wrapper(noncopyable());
     let _x2 = *x1;
 }

src/test/run-pass/borrowck-uniq-via-ref.rs

@@ -50,5 +50,5 @@ fn box_imm_recs(v: &Outer) {
     borrow(v.f.g.h); // OK
 }
 
-fn main() {
+pub fn main() {
 }

src/test/run-pass/borrowck-wg-autoderef-and-autoborrowvec-combined-issue-6272.rs

@@ -27,7 +27,7 @@
 // run-fail/borrowck-wg-autoderef-and-autoborrowvec-combined-fail-issue-6272.rs
 
 
-fn main() {
+pub fn main() {
     let a = @mut 3i;
     let b = @mut [a];
     let c = @mut [3];

src/test/run-pass/bug-7183-generics.rs

@@ -33,7 +33,7 @@ impl<T: Speak> Speak for Option<T> {
 }
 
 
-fn main() {
+pub fn main() {
     assert_eq!(3.hi(), ~"hello: 3");
     assert_eq!(Some(Some(3)).hi(), ~"something!something!hello: 3");
     assert_eq!(None::<int>.hi(), ~"hello - none");

src/test/run-pass/builtin-superkinds-capabilities-transitive.rs

@@ -26,7 +26,7 @@ fn foo<T: Foo>(val: T, chan: comm::Chan<T>) {
     chan.send(val);
 }
 
-fn main() {
+pub fn main() {
     let (p,c) = comm::stream();
     foo(31337, c);
     assert!(p.recv() == 31337);