Use uint8_t for qual_flags[] instead of ints.

Resulting bss reduction is ~6kbytes:

   text	   data	    bss	    dec	    hex	filename
 245703	    700	  19072	 265475	  40d03	strace.t4/strace
 245687	    700	  12928	 259315	  3f4f3	strace.t5/strace

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/syscall.c b/syscall.c
index fa06156..452ac8e 100644
--- a/syscall.c
+++ b/syscall.c
@@ -166,7 +166,7 @@
 enum { nerrnos0 = ARRAY_SIZE(errnoent0) };
 enum { nsignals0 = ARRAY_SIZE(signalent0) };
 enum { nioctlents0 = ARRAY_SIZE(ioctlent0) };
-int qual_flags0[MAX_QUALS];
+qualbits_t qual_flags0[MAX_QUALS];
 
 #if SUPPORTED_PERSONALITIES >= 2
 static const char *const errnoent1[] = {
@@ -182,7 +182,7 @@
 enum { nerrnos1 = ARRAY_SIZE(errnoent1) };
 enum { nsignals1 = ARRAY_SIZE(signalent1) };
 enum { nioctlents1 = ARRAY_SIZE(ioctlent1) };
-int qual_flags1[MAX_QUALS];
+qualbits_t qual_flags1[MAX_QUALS];
 #endif
 
 #if SUPPORTED_PERSONALITIES >= 3
@@ -199,7 +199,7 @@
 enum { nerrnos2 = ARRAY_SIZE(errnoent2) };
 enum { nsignals2 = ARRAY_SIZE(signalent2) };
 enum { nioctlents2 = ARRAY_SIZE(ioctlent2) };
-int qual_flags2[MAX_QUALS];
+qualbits_t qual_flags2[MAX_QUALS];
 #endif
 
 const struct sysent *sysent = sysent0;
@@ -210,7 +210,7 @@
 unsigned nerrnos = nerrnos0;
 unsigned nsignals = nsignals0;
 unsigned nioctlents = nioctlents0;
-int *qual_flags = qual_flags0;
+qualbits_t *qual_flags = qual_flags0;
 
 #if SUPPORTED_PERSONALITIES > 1
 unsigned current_personality;