Made more use of nil_or_empty?, fixed incorrect default species body shape, fixed Illusion, fixed potential foreign Pokémon with blank names

Data/Scripts/001_Technical/001_MKXP_Compatibility.rb

@@ -1,4 +1,4 @@
-# Using mkxp-z v2.1.1 - https://gitlab.com/mkxp-z/mkxp-z/-/releases/v2.1.1
+# Using mkxp-z v2.1.2 - https://gitlab.com/mkxp-z/mkxp-z/-/releases/v2.1.2
 $VERBOSE = nil
 Font.default_shadow = false if Font.respond_to?(:default_shadow)
 Graphics.frame_rate = 40

Data/Scripts/001_Technical/002_Files/001_FileTests.rb

@@ -181,7 +181,7 @@ module RTP
   @rtpPaths = nil
 
   def self.exists?(filename,extensions=[])
-    return false if !filename || filename==""
+    return false if nil_or_empty?(filename)
     eachPathFor(filename) { |path|
       return true if safeExists?(path)
       for ext in extensions
@@ -200,7 +200,7 @@ module RTP
   end
 
   def self.getPath(filename,extensions=[])
-    return filename if !filename || filename==""
+    return filename if nil_or_empty?(filename)
     eachPathFor(filename) { |path|
       return path if safeExists?(path)
       for ext in extensions

Data/Scripts/001_Technical/003_Intl_Messages.rb

@@ -405,7 +405,7 @@ class Messages
     if msgs.is_a?(Array)
       f.write("[#{secname}]\r\n")
       for j in 0...msgs.length
-        next if msgs[j]==nil || msgs[j]==""
+        next if nil_or_empty?(msgs[j])
         value=Messages.normalizeValue(msgs[j])
         origValue=""
         if origMessages
@@ -421,7 +421,7 @@ class Messages
       f.write("[#{secname}]\r\n")
       keys=msgs.keys
       for key in keys
-        next if msgs[key]==nil || msgs[key]==""
+        next if nil_or_empty?(msgs[key])
         value=Messages.normalizeValue(msgs[key])
         valkey=Messages.normalizeValue(key)
         # key is already serialized

Data/Scripts/001_Technical/005_PluginManager.rb

@@ -438,7 +438,7 @@ module PluginManager
     message += "#{$!.class} occurred.\r\n"
     # go through message content
     for line in $!.message.split("\r\n")
-      next if !line || line == ""
+      next if nil_or_empty?(line)
       n = line[/\d+/]
       err = line.split(":")[-1].strip
       lms = line.split(":")[0].strip