Ports: Add VVVVVV port

Co-Authored-By: Tim Schumacher <timschumi@gmx.de>

(thanks for the line ending and assert() troubleshooting)

Ports/VVVVVV/patches/0001-Change-C-standard-to-C99.patch

@@ -0,0 +1,25 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Grigoris Pavlakis <grigpavl@ece.auth.gr>
+Date: Thu, 9 Jun 2022 00:19:08 +0300
+Subject: [PATCH] Change C standard to C99
+
+The originally-set C90 doesn't support the `inline` keyword, causing
+weird compile errors because isalnum() and other functions under
+ctype.h are actually #define'd as inline.
+---
+ desktop_version/CMakeLists.txt | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/desktop_version/CMakeLists.txt b/desktop_version/CMakeLists.txt
+index 7405c12..49d44bb 100644
+--- a/desktop_version/CMakeLists.txt
++++ b/desktop_version/CMakeLists.txt
+@@ -27,7 +27,7 @@ endif()
+ if(${CMAKE_VERSION} VERSION_LESS "3.1.3")
+ 	message(WARNING "Your CMake version is too old; set -std=c90 -std=c++98 yourself!")
+ else()
+-	set(CMAKE_C_STANDARD 90)
++	set(CMAKE_C_STANDARD 99)
+ 	set(CMAKE_C_EXTENSIONS OFF)
+ 
+ 	set(CMAKE_CXX_STANDARD 98)