packages - added the ability to set a package section based on platform flags

The module/package variable rp_module_section used to need a single string containing
the section for the module - eg "core" "main" "opt".

With this change, you can provide additional space separated parameters to specify the
section for a specific platform flag. This is useful for example to have a module by default
in "opt", but then promote it to "main" for certain systems.

eg for mame4all (mostly useful for slower armv6 devices) you could do

rp_module_section="opt armv6=main"

which would place it in the main section only for armv6

Author: joolswills

scriptmodules/packages.sh

@@ -400,6 +400,19 @@ function rp_registerModule() {
         fi
     done
 
+    local sections=($rp_module_section)
+    # get default section
+    rp_module_section="${sections[0]}"
+
+    # loop through any additional flag=section parameters
+    local flag section
+    for section in "${sections[@]:1}"; do
+        section=(${section/=/ })
+        flag="${section[0]}"
+        section="${section[1]}"
+        isPlatform "$flag" && rp_module_section="$section"
+    done
+
     if [[ "$valid" -eq 1 ]]; then
         __mod_idx+=("$module_idx")
         __mod_id["$module_idx"]="$rp_module_id"