Support for Solaris 11 on x86 and SPARC.

Thanks to Bob Soliday for the necessary changes.

src/libCom/osi/os/solaris/epicsMath.h

@@ -17,6 +17,10 @@
 /* same as (!isnan(x) && !finite(x)) */
 #endif
 
+#ifndef isnan
+#  define isnan(x) ((x) != (x))
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif