internal/rosa: improve helper bindings

This uses more intuitive names for some arguments and inverts their default value. Slices and nil-capable strings replace skip arguments.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/package/perl.az

@@ -28,8 +28,8 @@ disable_test ext/POSIX/t/time.t
 
 	toyboxEarly = true;
 	exec = make {
-		omitDefaults = true;
-		inPlace = true;
+		defaults = false;
+		chdir = false;
 
 		configureName = "./Configure";
 		configure = {
@@ -70,7 +70,7 @@ package perl-Module-Build {
 	chmod = true;
 
 	exec = generic {
-		inPlace = true;
+		chdir = false;
 		build = `
 perl Build.PL --prefix=/system
 ./Build build`;