#367 makefile.in seems to ignore the --datarootdir setting

[IOhannes m zmölnig]

running "./configure" (or "./config.status") always yields an error:
"config.status: WARNING: makefile.in seems to ignore the --datarootdir setting"

configure then creates a hack for @mandir@ (which would depend on @datarootdir@

the attached patch fixes the warning by (additionally) using @datarootdir@

this is with autoconf 2.61 and afaik any "recent" version of Pd.
it's a rather cosmetic error, but why not fix warnings?

[IOhannes m zmölnig]

udiff of makefile.in against Pd-0.42.2