Fix math/freemat with Clang6.

Noticed by CMake 3.12 fallout. Fixed the C++ issues before I noticed that
the port was marked DEPRECATED. Porting FreeMat to llvm60 is doable, but
probably not worth it given the state of upstream. For reference:
	- s/llvm33/llvm60/ in the Makefile
	- OwningPtr -> std::unique_ptr
	- Some Clang includes have moved around
	- The real issue is dealing with how the JIT changed between
	  llvm33 and later versions.

No PORTREVISION bump, since (a) deprecated (b) compile fix for a platform
it didn't work on before and no code change where it did compile.

1 files changed, 20 insertions, 0 deletions

diff --git a/math/freemat/files/patch-libs_libMatC_CArray.cpp b/math/freemat/files/patch-libs_libMatC_CArray.cpp
new file mode 100644
index 000000000000..cd43f643358b
--- /dev/null
+++ b/math/freemat/files/patch-libs_libMatC_CArray.cpp
@@ -0,0 +1,20 @@
+--- libs/libMatC/CArray.cpp.orig	2018-06-22 09:05:35 UTC
++++ libs/libMatC/CArray.cpp
+@@ -534,7 +534,7 @@ void* carray_get_aa(void* interp, void* arg, void* rnd
+ extern "C" EXPORT
+ double carray_get_ss(void* interp, void* arg, double row, double col, bool *flag)
+ {
+-  if (*flag) return NULL;
++  if (*flag) return 0.0L;
+   try
+     {
+       CArray *cp = cast(arg);
+@@ -569,7 +569,7 @@ double carray_get_ss(void* interp, void* arg, double r
+ extern "C" EXPORT
+ double carray_get_s(void* interp, void* arg, double row, bool *flag)
+ {
+-  if (*flag) return NULL;
++  if (*flag) return 0.0L;
+   try
+     {
+       CArray *cp = cast(arg);