Various fixes to the tree to get coreboot-v2 to build on Solaris

- Replace $(PWD) with $(CURDIR) in Makefiles. I don't know why
  the Solaris version behaves differently, but CURDIR is a safe
  choice on gnu make (and we require gnu make already)
- Use tail -1 instead of tail -n1 in a file that already relies on
  tail -1 support in another place
- Use tail -1 as alternative to tail -n1 in another place
- Use #define for ulong_t in romcc, as that name is used on Solaris
- Avoid fprinting a null pointer. The standard doesn't mandate that
  this is a special case, and Solaris doesn't implement it that way.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4305 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

util/romcc/romcc.c

@@ -280,7 +280,7 @@ typedef uint16_t ushort_t;
 typedef int32_t  int_t;
 typedef uint32_t uint_t;
 typedef int32_t  long_t;
-typedef uint32_t ulong_t;
+#define ulong_t uint32_t
 
 #define SCHAR_T_MIN (-128)
 #define SCHAR_T_MAX 127
@@ -24819,8 +24819,8 @@ static void print_instructions(struct compile_state *state)
 			last_occurance != ins->occurance) {
 			if (!ins->occurance->parent) {
 				fprintf(fp, "\t/* %s,%s:%d.%d */\n",
-					ins->occurance->function,
-					ins->occurance->filename,
+					ins->occurance->function?ins->occurance->function:"(null)",
+					ins->occurance->filename?ins->occurance->filename:"(null)",
 					ins->occurance->line,
 					ins->occurance->col);
 			}