Switch to ANSI C style C function declarations.

  main(argc, argv) --> int main(int argc, char** argv)

Although we accept int, void, and char types, and pointers to same,
we actually still treat everything as an int.
diff --git a/libacc/tests/testarm b/libacc/tests/testarm
index db7ebe5..24fbc42 100755
--- a/libacc/tests/testarm
+++ b/libacc/tests/testarm
@@ -1,9 +1,9 @@
 #!/bin/sh
 adb remount
 adb shell rm /system/bin/acc
-adb push data/returnval.c /system/bin/returnval.c
+adb push data/returnval-ansi.c /system/bin/returnval-ansi.c
 cd ..
 mm -j8
 cd tests
 adb sync
-adb shell /system/bin/acc -S /system/bin/returnval.c
+adb shell /system/bin/acc -S /system/bin/returnval-ansi.c