Merge branch 'issue/dlamch' into 'master'

Add lapacke header for dlamch calls when setting the precision for testings.

See merge request !356

testing/chameleon_ztesting.c

@@ -25,6 +25,7 @@
  *
  */
 #include "testings.h"
+#include "coreblas/lapacke.h"
 
 testing_options_t options;
 

testing/vendor_ztesting.c

@@ -19,6 +19,7 @@
  *
  */
 #include "testings.h"
+#include "coreblas/lapacke.h"
 
 testing_options_t options;