Delete firstfile.c and lastfile.c

With the removal of unexec and purespace, the definitions in these files
are no longer used.  Remove them.

* src/firstfile.c:
* src/lastfile.c: Delete unused files.
* configure.ac (PRE_ALLOC_OBJ, POST_ALLOC_OBJ, FIRSTFILE_OBJ):
Remove variables and dependent code.
* msdos/autogen/Makefile.in:
* msdos/sed1v2.inp:
* src/Makefile.in: Don't use above deleted variables.
* src/deps.mk: Remove lastfile.c dependencies.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/deps.mk b/src/deps.mk
index 0ba43a014f8..80937e26b10 100644
--- a/src/deps.mk
+++ b/src/deps.mk
@@ -137,7 +137,6 @@ keyboard.o: keyboard.c termchar.h termhooks.h termopts.h buffer.h character.h \
 keymap.o: keymap.c buffer.h commands.h keyboard.h termhooks.h blockinput.h \
    atimer.h systime.h character.h charset.h $(INTERVALS_H) \
    keymap.h window.h coding.h frame.h lisp.h globals.h $(config_h)
-lastfile.o: lastfile.c $(config_h)
 macros.o: macros.c window.h buffer.h commands.h macros.h keyboard.h msdos.h \
    dispextern.h lisp.h globals.h $(config_h) systime.h coding.h composite.h
 gmalloc.o: gmalloc.c $(config_h)