ndk-stl: Attempt to fix math.h problem (#1149)

packages/ndk-stl/build.sh

@@ -1,13 +1,15 @@
 TERMUX_PKG_HOMEPAGE=https://developer.android.com/tools/sdk/ndk/index.html
 TERMUX_PKG_DESCRIPTION="Header files from the Android NDK needed for compiling C++ programs using STL"
 TERMUX_PKG_VERSION=$TERMUX_NDK_VERSION
-TERMUX_PKG_REVISION=3
+TERMUX_PKG_REVISION=4
 TERMUX_PKG_NO_DEVELSPLIT=yes
 
 termux_step_extract_into_massagedir () {
 	mkdir -p $TERMUX_PKG_MASSAGEDIR/$TERMUX_PREFIX/include/c++/v1/
 	cp -Rf $TERMUX_STANDALONE_TOOLCHAIN/include/c++/4.9.x/* $TERMUX_PKG_MASSAGEDIR/$TERMUX_PREFIX/include/c++/v1/
 
+	( cd  $TERMUX_PKG_MASSAGEDIR/$TERMUX_PREFIX/include/c++/v1/ && patch -p1 < $TERMUX_PKG_BUILDER_DIR/math-header.diff )
+
 	# Revert the patch for <cstddef> that's only used for using g++
 	# from the ndk (https://github.com/android-ndk/ndk/issues/215):
 	cd $TERMUX_PKG_MASSAGEDIR/$TERMUX_PREFIX/include/c++/v1/

packages/ndk-stl/math-header.diff

@@ -0,0 +1,24 @@
+diff -u -r ../../../../../../../../../massage-pristine/data/data/com.termux/files/usr/include/c++/v1/cmath ./cmath
+--- ../../../../../../../../../massage-pristine/data/data/com.termux/files/usr/include/c++/v1/cmath	2018-01-03 00:47:31.973545021 +0100
++++ ./cmath	2018-01-03 00:48:02.453189261 +0100
+@@ -302,7 +302,7 @@
+ */
+ 
+ #include <__config>
+-#include <math.h>
++#include <c++/v1/math.h>
+ 
+ #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+ #pragma GCC system_header
+diff -u -r ../../../../../../../../../massage-pristine/data/data/com.termux/files/usr/include/c++/v1/math.h ./math.h
+--- ../../../../../../../../../massage-pristine/data/data/com.termux/files/usr/include/c++/v1/math.h	2018-01-03 00:47:31.985544880 +0100
++++ ./math.h	2018-01-03 00:48:24.732929153 +0100
+@@ -298,7 +298,7 @@
+ #pragma GCC system_header
+ #endif
+ 
+-#include_next <math.h>
++#include <../../math.h>
+ 
+ #ifdef __cplusplus
+