gld960.em, h8300hms.em, h8300xray.em, lnk960.em, st2000.em,
vanilla.em: Rename all (generated) ld__*.c files to em_.c.
This is one character shorter, and lets people build on
SVR3 system. (ld__h8300xray.[co] was the killer there;
h8300xray.sc-sh is also overlong, but seems harmless.)
Based on a patch from Jonathan Ryshpan <hitachi!amito!jon>.
* Makefile.in (clean): Fix typo mostclean -> mostlyclean.
* configure.in: Add host isc.
