demmory.h: change __FUNCTION__ to __func__

doc/tex/cdo_int.tex

 \chapter{Introduction}
 
-The Climate Data Operators ({\CDO}) software are a collection of many operators
+The Climate Data Operators ({\CDO}) software is a collection of many operators
 for standard processing of climate and NWP model output.
 The operators include simple statistical and arithmetic functions, data selection
 and subsampling tools, and spatial interpolation.

src/dmemory.h

@@ -31,7 +31,7 @@ extern void    Free   (const char *caller, const char *file, int line, void *ptr
 #if  defined  WITH_CALLER_NAME
 #  define  realloc(p, s)  Realloc(__func__, __FILE__, __LINE__, p, (size_t)s)
 #  define   calloc(n, s)   Calloc(__func__, __FILE__, __LINE__, n, (size_t)s)
-#  define   malloc(s)      Malloc(__FUNCTION__, __FILE__, __LINE__, (size_t)s)
+#  define   malloc(s)      Malloc(__func__, __FILE__, __LINE__, (size_t)s)
 #  define     free(p)        Free(__func__, __FILE__, __LINE__, p)
 #else
 #  define  realloc(p, s)  Realloc((void *) NULL, __FILE__, __LINE__, p, (size_t)s)