changes for plan9--

makefont.c: different quote for call to MakeTeXPK

/usr... -> /sys in mkfile and config.* files

getenv("HOME") -> getenv("home") in search.c

strcpy decls removed from dvips.c, resident.c

floor decl removed from dopage.c

MakeTeXPK, texc.script in rc

lots of changes in mkfile (see old version)