VirtualGL: another fix for gcc6 building

srcpkgs/VirtualGL/patches/fix-gcc6-std_min.patch

@@ -0,0 +1,20 @@
+With gcc6 there is an error: 'min' was not declared int this scope
+Instead of looking for a missing header to include do it the simple way.
+
+--- server/fltk/fl_draw.cxx	2016-02-16 03:25:04.000000000 +0100
++++ server/fltk/fl_draw.cxx	2016-10-03 16:51:17.424915957 +0200
+@@ -143,12 +143,12 @@
+            *symptr++ = *str++);
+       *symptr = '\0';
+       if (isspace(*str)) str++;
+-      symwidth[0] = min(w,h);
++      symwidth[0] = w < h ? w : h;
+     }
+ 
+     if (str && (p = strrchr(str, '@')) != NULL && p > (str + 1) && p[-1] != '@') {
+       strlcpy(symbol[1], p, sizeof(symbol[1]));
+-      symwidth[1] = min(w,h);
++      symwidth[1] = w < h ? w : h;
+     }
+   }
+