Remove trailing commas in --enable-{debug,ref-counts-dump}.

Those commas will be interpreted as commands and warnings printed out.  Also,
put square brackets around the strings describing the corresponding autoconf
definitions to save them from possible substitions.

Noticed by Kevin HaleBoyes.
BP

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@17803 57a11ea4-9604-0410-9ed3-97b8803252fd

configure.in

@@ -711,8 +711,8 @@ AC_ARG_ENABLE( debug,
        # ...except for those the user wants.
        CFLAGS="${CFLAGS} -g ${USER_OPTIMIZATION}"
        LDFLAGS="${LDFLAGS} -g"
-       AC_DEFINE(DEBUG_MEMORY,1,Enable debug memory),
-       AC_DEFINE(DEBUG_MEMORY,0,Enable debug memory)])
+       AC_DEFINE(DEBUG_MEMORY,1,[Enable debug memory])
+       AC_DEFINE(DEBUG_MEMORY,0,[Enable debug memory])])
 
 AC_ARG_ENABLE( profile,
   [  --enable-profile             compile with profiling set],
@@ -721,8 +721,8 @@ AC_ARG_ENABLE( profile,
 
 AC_ARG_ENABLE( ref-counts-dumps,
   [  --enable-ref-counts-dumps    compile with ref count dumps],
-       AC_DEFINE(DEBUG_REFERENCE_COUNTING,1,Enable reference count dumps),
-       AC_DEFINE(DEBUG_REFERENCE_COUNTING,0,Enable reference count dumps) )
+       AC_DEFINE(DEBUG_REFERENCE_COUNTING,1,[Enable reference count dumps])
+       AC_DEFINE(DEBUG_REFERENCE_COUNTING,0,[Enable reference count dumps]) )
 
 
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