perf_counter tools: Replace isprint() with issane()

The Git utils came with a ctype replacement that doesn't provide
isprint(). Add a replacement.

Solves a build bug on certain distros.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

tools/perf/builtin-report.c

@@ -1266,7 +1266,7 @@ static void trace_event(event_t *event)
 			for (j = 0; j < 15-(i & 15); j++)
 				cdprintf("   ");
 			for (j = 0; j < (i & 15); j++) {
-				if (isprint(raw_event[i-15+j]))
+				if (issane(raw_event[i-15+j]))
 					cdprintf("%c", raw_event[i-15+j]);
 				else
 					cdprintf(".");

tools/perf/util/util.h

@@ -343,6 +343,7 @@ extern unsigned char sane_ctype[256];
 #define isdigit(x) sane_istest(x,GIT_DIGIT)
 #define isalpha(x) sane_istest(x,GIT_ALPHA)
 #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
+#define issane(x)  sane_istest(x,GIT_SPACE | GIT_DIGIT | GIT_ALPHA | GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
 #define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL)
 #define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL)
 #define tolower(x) sane_case((unsigned char)(x), 0x20)