Split local and global cflags

Native compiler flags are currently applied in approximately:
global cflags
local cflags
local include dirs
global include dirs
global conlyflags
local conlyflags
global cppflags
local cppflags

This means that a flag that is enabled in the global cppflags
cannot be disabled in the local cflags, and an Android.bp author
must know to disable it in the local cppflags.  A better order
would be:
global cflags
global conlyflags
global cppflags
local cflags
local conlyflags
local cppflags
local include dirs
global include dirs

We are mixing both the global and local cflags into a single
variable, and similar for conlyflags and cppflags, which
prevents reordering them.  This CL prepares to reorder them
by splitting the global and local cflags into separate variables.

Bug: 143713277
Test: m native
Change-Id: Ic55a8c3516c331dc5f2af9d00e59ceca9d3e6c15
diff --git a/cc/sabi.go b/cc/sabi.go
index 4760313..8cef170 100644
--- a/cc/sabi.go
+++ b/cc/sabi.go
@@ -70,8 +70,10 @@
 func (sabimod *sabi) flags(ctx ModuleContext, flags Flags) Flags {
 	// Assuming that the cflags which clang LibTooling tools cannot
 	// understand have not been converted to ninja variables yet.
-	flags.ToolingCFlags = filterOutWithPrefix(flags.CFlags, config.ClangLibToolingUnknownCflags)
-	flags.ToolingCppFlags = filterOutWithPrefix(flags.CppFlags, config.ClangLibToolingUnknownCflags)
+	flags.Local.ToolingCFlags = filterOutWithPrefix(flags.Local.CFlags, config.ClangLibToolingUnknownCflags)
+	flags.Global.ToolingCFlags = filterOutWithPrefix(flags.Global.CFlags, config.ClangLibToolingUnknownCflags)
+	flags.Local.ToolingCppFlags = filterOutWithPrefix(flags.Local.CppFlags, config.ClangLibToolingUnknownCflags)
+	flags.Global.ToolingCppFlags = filterOutWithPrefix(flags.Global.CppFlags, config.ClangLibToolingUnknownCflags)
 
 	return flags
 }