Globally disable -Wreorder-init-list.

This warning is triggered even when initializers don't have any
side effects, so it very rarely surfaces actual bugs/mistakes.
99% of the time it complains about a purely cosmetic issue.
Disable it by default in commonGlobalCFlags, which still allows
individual modules to opt into it.

Bug: 145210666
Test: presubmit
Change-Id: I671b5c457ee3d92b9cc37f020ba54e01e1a04f59
diff --git a/cc/config/global.go b/cc/config/global.go
index 62b008b..1230370 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -69,8 +69,6 @@
 		// Making deprecated usages an error causes extreme pain when trying to
 		// deprecate anything.
 		"-Wno-error=deprecated-declarations",
-		// This rarely indicates a bug. http://b/145210666
-		"-Wno-error=reorder-init-list",
 
 		// Warnings disabled by default.
 
@@ -86,6 +84,14 @@
 		// subsequent version of an interface, so this warning is currently
 		// infeasible to enable.
 		"-Wno-inconsistent-missing-override",
+		// Detects designated initializers that are in a different order than
+		// the fields in the initialized type, which causes the side effects
+		// of initializers to occur out of order with the source code.
+		// In practice, this warning has extremely poor signal to noise ratio,
+		// because it is triggered even for initializers with no side effects.
+		// Individual modules can still opt into it via cflags.
+		"-Wno-error=reorder-init-list",
+		"-Wno-reorder-init-list",
 		// Incompatible with the Google C++ style guidance to use 'int' for loop
 		// indices; poor signal to noise ratio.
 		"-Wno-sign-compare",