Change bool, and string properties to *bool, and *string for cc

there's no use case for prepending/appending to bool, and string
properties within module struct. Declearing "*bool" and "*string" almost
cover everything user need.

I did see one case that user specify relative_install_path as
path prefix in cc_defaults, and concatenate with the one in real module
to get the final relative install path in Android.bp <bionic/tests/libs>.

Test: m -j checkbuild
Bug: b/68853585
Change-Id: If3a7a2689c3fc307aae136af6bc9c57f27a1e1a0

android/androidmk.go

@@ -25,7 +25,6 @@ import (
 	"strings"
 
 	"github.com/google/blueprint"
-	"github.com/google/blueprint/proptools"
 )
 
 func init() {
@@ -77,7 +76,7 @@ func (c *androidMkSingleton) GenerateBuildActions(ctx blueprint.SingletonContext
 
 	sort.Sort(AndroidModulesByName{androidMkModulesList, ctx})
 
-	transMk := PathForOutput(ctx, "Android"+proptools.String(config.ProductVariables.Make_suffix)+".mk")
+	transMk := PathForOutput(ctx, "Android"+String(config.ProductVariables.Make_suffix)+".mk")
 	if ctx.Failed() {
 		return
 	}