libprojectM: add gcc-6 patch

packages/graphics/libprojectM/patches/libprojectM-c++14.patch

@@ -0,0 +1,61 @@
+diff -x '*orig' -rup a/Common.hpp b/Common.hpp
+--- a/Common.hpp	2012-05-20 04:43:26.000000000 +0100
++++ b/Common.hpp	2016-03-17 05:00:14.176905540 +0000
+@@ -63,7 +63,8 @@ extern FILE *fmemopen(void *buf, size_t
+ 
+ #ifdef LINUX
+ #include <cstdlib>
+-#define projectM_isnan isnan
++#include <cmath>
++#define projectM_isnan std::isnan
+ 
+ #endif
+ 
+diff -x '*orig' -rup a/MilkdropPresetFactory/Parser.cpp b/MilkdropPresetFactory/Parser.cpp
+--- a/MilkdropPresetFactory/Parser.cpp	2012-05-20 04:43:26.000000000 +0100
++++ b/MilkdropPresetFactory/Parser.cpp	2016-03-17 05:00:14.177905556 +0000
+@@ -1406,7 +1406,7 @@ PerFrameEqn * Parser::parse_implicit_per
+   PerFrameEqn * per_frame_eqn;
+   GenExpr * gen_expr;
+ 
+-  if (fs == NULL)
++  if (!fs)
+     return NULL;
+   if (param_string == NULL)
+     return NULL;
+@@ -1561,7 +1561,7 @@ InitCond * Parser::parse_per_frame_init_
+ 
+   if (preset == NULL)
+     return NULL;
+-  if (fs == NULL)
++  if (!fs)
+     return NULL;
+ 
+   if ((token = parseToken(fs, name)) != tEq)
+@@ -1875,7 +1875,7 @@ int Parser::parse_shapecode(char * token
+   /* Null argument checks */
+   if (preset == NULL)
+     return PROJECTM_FAILURE;
+-  if (fs == NULL)
++  if (!fs)
+     return PROJECTM_FAILURE;
+   if (token == NULL)
+     return PROJECTM_FAILURE;
+@@ -2166,7 +2166,7 @@ int Parser::parse_wave(char * token, std
+ 
+   if (token == NULL)
+     return PROJECTM_FAILURE;
+-  if (fs == NULL)
++  if (!fs)
+     return PROJECTM_FAILURE;
+   if (preset == NULL)
+     return PROJECTM_FAILURE;
+@@ -2348,7 +2348,7 @@ int Parser::parse_shape(char * token, st
+   if (token == NULL)
+ 
+     return PROJECTM_FAILURE;
+-  if (fs == NULL)
++  if (!fs)
+     return PROJECTM_FAILURE;
+   if (preset == NULL)
+     return PROJECTM_FAILURE;