valgrind: explicitly disable mpicc compiler

If there's an mpicc compile on the machine, the configure
script will take it, causing a bit of headache.

SVN-Revision: 42197

package/devel/valgrind/Makefile

@@ -93,6 +93,7 @@ endif
 CONFIGURE_ARGS += \
 	--enable-tls \
 	--without-x \
+	--without-mpicc \
 	--without-uiout \
 	--disable-valgrindmi \
 	--disable-tui \