external/coinmp: Work around -Werror,-Wformat-pedantic

Clang trunk since r231211 with -pedantic-errors now emits
"Cbc_C_Interface.cpp:379:55: error: format specifies type 'void *' but the
argument has type 'char *' [-Werror,-Wformat-pedantic]"

Change-Id: I5d410068f1cd82334f26148df30a45dbc9eabd0a

external/coinmp/UnpackedTarball_coinmp.mk

@@ -25,6 +25,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,coinmp,\
 		$(if $(filter 120,$(VCVER)),external/coinmp/coinmp-vs2013.patch.1) \
 	) \
 	$(if $(filter MACOSX,$(OS)),external/coinmp/macosx.build.patch.1) \
+	external/coinmp/werror-format-pedantic.patch.0 \
 ))
 
 # vim: set noet sw=4 ts=4:

external/coinmp/werror-format-pedantic.patch.0

@@ -0,0 +1,10 @@
+--- Cbc/configure
++++ Cbc/configure
+@@ -3780,7 +3780,6 @@
+           *-darwin*)
+             ;;
+           *)
+-            coin_warn_cxxflags="-pedantic-errors $coin_warn_cxxflags"
+             ;;
+         esac
+     esac