iOS: Update Irrlicht (#110)

build/iOS/deps/irrlicht.sh

@@ -3,12 +3,12 @@
 . sdk.sh
 
 [ ! -d irrlicht-src ] && \
-	svn co -r 5415 svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es irrlicht-src
+	svn co -r 5573 svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es irrlicht-src
 
 cd irrlicht-src/
 
 if [ ! -f .patched ]; then
-	for p in touchcount unscaled dblfreefix viewcontroller; do
+	for p in touchcount unscaled dblfreefix viewcontroller headerpath roundingerror; do
 		patch -p0 <../../patches/irrlicht-$p.patch
 	done
 	touch .patched

build/iOS/patches/irrlicht-headerpath.patch

@@ -0,0 +1,18 @@
+--- source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj.orig	2018-04-17 12:20:00.000000000 +0200
++++ source/Irrlicht/Irrlicht.xcodeproj/project.pbxproj	2018-04-17 12:36:00.000000000 +0200
+@@ -3311,6 +3319,7 @@
+ 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+ 				GCC_WARN_UNUSED_FUNCTION = YES;
+ 				GCC_WARN_UNUSED_VARIABLE = YES;
++				HEADER_SEARCH_PATHS = "${SRCROOT}/../../include";
+ 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+ 				MTL_ENABLE_DEBUG_INFO = YES;
+ 				ONLY_ACTIVE_ARCH = YES;
+@@ -3345,6 +3354,7 @@
+ 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+ 				GCC_WARN_UNUSED_FUNCTION = YES;
+ 				GCC_WARN_UNUSED_VARIABLE = YES;
++				HEADER_SEARCH_PATHS = "${SRCROOT}/../../include";
+ 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+ 				MTL_ENABLE_DEBUG_INFO = NO;
+ 				PRODUCT_MODULE_NAME = Irrlicht;

build/iOS/patches/irrlicht-roundingerror.patch

@@ -0,0 +1,15 @@
+--- include/irrMath.h.orig	2018-04-17 13:15:07.000000000 +0200
++++ include/irrMath.h	2018-04-17 13:15:50.000000000 +0200
+@@ -196,6 +196,12 @@
+ 	{
+ 		return ROUNDING_ERROR_f64;
+ 	}
++
++	template <>
++	inline s16 roundingError()
++	{
++		return 0;
++	}
+ 
+ 	template <>
+ 	inline s32 roundingError()