configure: uniform the defines to #define HAVE_xxx (0|1)

The configure followed 5 different convetions of defines because the next guy
always wanted to introduce a new better way to uniform it[1]. For an
hypothetic feature 'hurr' you could have had:

  * #define HAVE_HURR 1   / #undef HAVE_DURR
  * #define HAVE_HURR     / #undef HAVE_DURR
  * #define CONFIG_HURR 1 / #undef CONFIG_DURR
  * #define HAVE_HURR 1   / #define HAVE_DURR 0
  * #define CONFIG_HURR 1 / #define CONFIG_DURR 0

All is now uniform and uses:
  * #define HAVE_HURR 1
  * #define HAVE_DURR 0

We like definining to 0 as opposed to `undef` bcause it can help spot typos
and is very helpful when doing big reorganizations in the code.

[1]: http://xkcd.com/927/ related

3 files changed, 17 insertions, 16 deletions

diff --git a/osdep/getch2.c b/osdep/getch2.c
index 8b87e79c76..e3b1179fdf 100644
--- a/osdep/getch2.c
+++ b/osdep/getch2.c
@@ -30,11 +30,11 @@
 #include <errno.h>
 #include <sys/ioctl.h>
 
-#ifdef HAVE_TERMIOS
-#ifdef HAVE_TERMIOS_H
+#if HAVE_TERMIOS
+#if HAVE_TERMIOS_H
 #include <termios.h>
 #endif
-#ifdef HAVE_SYS_TERMIOS_H
+#if HAVE_SYS_TERMIOS_H
 #include <sys/termios.h>
 #endif
 #endif
@@ -47,7 +47,7 @@
 #include "mpvcore/input/keycodes.h"
 #include "getch2.h"
 
-#ifdef HAVE_TERMIOS
+#if HAVE_TERMIOS
 static volatile struct termios tio_orig;
 static volatile int tio_orig_set;
 #endif
@@ -71,12 +71,13 @@ typedef struct {
 
 static keycode_map getch2_keys;
 
-#ifdef HAVE_TERMCAP
+#if HAVE_TERMINFO || HAVE_TERMCAP
+
 
 static char *term_rmkx = NULL;
 static char *term_smkx = NULL;
 
-#ifdef HAVE_TERMINFO
+#if HAVE_TERMINFO
 #include <curses.h>
 #endif
 #include <term.h>
@@ -138,7 +139,7 @@ static keycode_st* keys_push_once(char *p, int code) {
     return st;
 }
 
-#ifdef HAVE_TERMCAP
+#if HAVE_TERMINFO || HAVE_TERMCAP
 
 typedef struct {
     char *buf;
@@ -228,9 +229,9 @@ static void termcap_add_extra_f_keys(void) {
 #endif
 
 int load_termcap(char *termtype){
-#ifdef HAVE_TERMCAP
+#if HAVE_TERMINFO || HAVE_TERMCAP
 
-#ifdef HAVE_TERMINFO
+#if HAVE_TERMINFO
     use_env(TRUE);
     int ret;
     if (setupterm(termtype, 1, &ret) != OK) {
@@ -445,12 +446,12 @@ static void do_activate_getch2(void)
     if (getch2_active)
         return;
 
-#ifdef HAVE_TERMCAP
+#if HAVE_TERMINFO || HAVE_TERMCAP
     if (term_smkx)
         tputs(term_smkx, 1, putchar);
 #endif
 
-#ifdef HAVE_TERMIOS
+#if HAVE_TERMIOS
     struct termios tio_new;
     tcgetattr(0,&tio_new);
 
@@ -473,12 +474,12 @@ static void do_deactivate_getch2(void)
     if (!getch2_active)
         return;
 
-#ifdef HAVE_TERMCAP
+#if HAVE_TERMINFO || HAVE_TERMCAP
     if (term_rmkx)
         tputs(term_rmkx, 1, putchar);
 #endif
 
-#ifdef HAVE_TERMIOS
+#if HAVE_TERMIOS
     if (tio_orig_set) {
         // once set, it will never be set again
         // so we can cast away volatile here
diff --git a/osdep/io.c b/osdep/io.c
index b618c76747..b949746e6e 100644
--- a/osdep/io.c
+++ b/osdep/io.c
@@ -58,7 +58,7 @@ char *mp_to_utf8(void *talloc_ctx, const wchar_t *s)
 #include <io.h>
 #include <fcntl.h>
 
-#ifdef HAVE_PTHREADS
+#if HAVE_PTHREADS
 #include <pthread.h>
 #endif
 
@@ -298,7 +298,7 @@ static void init_getenv(void)
 
 char *mp_getenv(const char *name)
 {
-#ifdef HAVE_PTHREADS
+#if HAVE_PTHREADS
     static pthread_once_t once_init_getenv = PTHREAD_ONCE_INIT;
     pthread_once(&once_init_getenv, init_getenv);
 #else
diff --git a/osdep/timer-linux.c b/osdep/timer-linux.c
index 314aa47b27..1378e6ea7e 100644
--- a/osdep/timer-linux.c
+++ b/osdep/timer-linux.c
@@ -30,7 +30,7 @@ void mp_sleep_us(int64_t us)
 {
     if (us < 0)
         return;
-#ifdef HAVE_NANOSLEEP
+#if HAVE_NANOSLEEP
     struct timespec ts;
     ts.tv_sec  =  us / 1000000;
     ts.tv_nsec = (us % 1000000) * 1000;