regress: get most regression tests to build.

Save badsysall, which will have to be done later.

Change-Id: Iac5cb47baf7ce4845b95248d44218fc26920157a
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>

sys/src/regress/execl.c

@@ -4,7 +4,6 @@
 void
 main(int argc, char *argv[])
 {
-	char buf[512];
 	Waitmsg *w;
 	int i;
 

sys/src/regress/float.c

@@ -34,9 +34,9 @@ main(void)
 {
 	double p = DPREC;
 	int d[2] = { DIEEELO, DIEEEHI };
-	uvlong dieee, q;
-	dieee = *(uvlong*)d;
-	q = *(uvlong*)&p;
+	uint64_t dieee, q;
+	dieee = *(uint64_t*)d;
+	q = *(uint64_t*)&p;
 
 	err = 0;
 	notify(catcher);

sys/src/regress/nanotime.c

@@ -6,7 +6,7 @@ void
 main(void)
 {
 	int ret = 0; // success
-	vlong start, end;
+	uint64_t start, end;
 	char *msg;
 
 	start = nsec();

sys/src/regress/regress.json

@@ -5,17 +5,23 @@
 	"Install": "/$ARCH/bin/regress",
 	"Name": "Regress",
 	"SourceFilesCmd": [
-		"iphash.c",
-		"privates.c",
+		"args.c",
+		"execl.c",
+		"float.c",
 		"fork.c",
-		"thread.c",
+		"frexp.c",
+		"idseg.c",
+		"iphash.c",
 		"longjmp.c",
+		"mixedfloat.c",
 		"mmap.c",
+		"nanotime.c",
+		"privates.c",
 		"psx.c",
-		"args.c",
 		"syscall.c",
 		"sysfatal.c",
-		"execl.c",
+		"sysstatread.c",
+		"thread.c",
 		"va_copy.c"
 	]
 }

sys/src/regress/va_copy.c

@@ -2,7 +2,7 @@
 #include <libc.h>
 #include <stdio.h>
 
-int
+void
 main(){
 	char *correct="0.987650\n";
 	static char result[128];