Two new features primarily in Makefile.src:

NOSTATICCORE - an option for Linux to get a better backtrace
updatedepend - an easier alternative to "make depend"

- .gitignore: ignore new temporary .*.c files
- hints/linux.370: add NOSTATICCORE and instructions
- Makefile.src:
-- If NOSTATICCORE defined, run core .c files through awk to
   remove static attribute from functions.
-- add updatedepend target and related bits

sys/unix/hints/linux.370

@@ -43,6 +43,11 @@ endif
 GAMEUID  = $(USER)
 GAMEGRP  = games
 
+# This gives better backtraces by making all core functions global; this
+# works around a limitation in glibc's backtrace(3) function.
+# Recommended with CRASHREPORT.
+#NOSTATICCORE = 1
+
 #-----------------------------------------------------------------------------
 # You shouldn't need to change anything below here (in the hints file; if
 # you're reading this in Makefile augmented by hints, that may not be true).