gdb/

gdb/
	* macrocmd.c (info_macro_command): Print -Dname=value if LINE is zero.

gdb/doc/
	* gdb.texinfo (Macros): Note command-line for `info macro'.  Append
	a new part on command-line defined macros.

gdb/testsuite/
	* gdb.base/macscp.exp: New `options' parameter `-DFROM_COMMANDLINE'.
	(info_macro): Remova `decimal' declaration.  New variable `nonzero'.
	Replace all uses of `decimal' by `nonzero'.
	(info macro FROM_COMMANDLINE): New test.