libmakepkg: make gettext replacements more templated

Making the undescore be translated is probably not something we need
translators to think about.

Additionally, a number of places which use the same text differ only by
the variable being referenced, so simplifying the string means we can
drop a redundant translation.

Bonus: we save a few bytes here and there. \o/
Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

scripts/libmakepkg/lint_pkgbuild/variable.sh.in

@@ -86,7 +86,7 @@ lint_variable() {
 
 			for i in ${arch_array[@]}; do
 				if extract_function_variable "package_$pkg" "${i}_${a}" 0 out; then
-					error "$(gettext "%s_%s should be an array")" "$i" "$a"
+					error "$(gettext "%s should be an array")" "${i}_${a}"
 					ret=1
 				fi
 			done