fix Autoheader for macros with parameters

[Stepan Kasal]

Hello,

in project libgsf, I noticed the following:
        AH_TEMPLATE([S_ISREG], [Define S_ISREG if stat.h doesn't])
        AC_DEFINE([S_ISREG(m)], [(((m) & S_IFMT) == S_IFREG)])

This is a workaround for the following bug:

With mere

        AC_DEFINE([S_ISREG(m)], [(((m) & S_IFMT) == S_IFREG)],
                [Define S_ISREG if stat.h doesn't])

the generated template file contains

        #undef S_ISREG(m)

which config status is not able to parse.

Attached please find a proposed patch.  OK to commit?

Have a nice day,
        Stepan Kasal

autoconf-20050812-ah_prm.patch
Description: Text document