prefer system installation of inih

Closes #195.

Signed-off-by: Stephan Lachnit <stephanlachnit@protonmail.com>

daemon/gamemode-config.c

@@ -36,7 +36,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "common-logging.h"
 
 /* Ben Hoyt's inih library */
-#include "ini.h"
+#include <ini.h>
 
 #include <dirent.h>
 #include <math.h>

meson.build

@@ -157,8 +157,10 @@ endif
 # main library
 if with_daemon == true
     # inih currently only needed by the daemon
-    inih = subproject('inih')
-    inih_dependency = inih.get_variable('inih_dependency')
+    inih_dependency = dependency(
+        'inih',
+        fallback : ['inih', 'inih_dependency']
+    )
 
     subdir('daemon')