Conditional compilation on some c99 syntax in header.

If the header is in a C++11 compilation unit, use C++11
aggregate initialization syntax instead.

.gitignore

@@ -61,6 +61,10 @@ tags
 vgcore.*
 *.out.*
 
+# Wix artifacts
+*.msi
+*.wixpdb
+
 # Created by https://www.gitignore.io/api/c
 
 ### C ###

src/include/janet.h

@@ -267,11 +267,22 @@ typedef struct {
 } JanetBuildConfig;
 
 /* Get config of current compilation unit. */
+#ifdef __cplusplus
+/* C++11 syntax */
+#define janet_config_current() (JanetBuildConfig { \
+    JANET_VERSION_MAJOR, \
+    JANET_VERSION_MINOR, \
+    JANET_VERSION_PATCH, \
+    JANET_CURRENT_CONFIG_BITS })	
+#else
+/* C99 syntax */
 #define janet_config_current() ((JanetBuildConfig){ \
     JANET_VERSION_MAJOR, \
     JANET_VERSION_MINOR, \
     JANET_VERSION_PATCH, \
-    JANET_CURRENT_CONFIG_BITS })
+    JANET_CURRENT_CONFIG_BITS })	
+#endif
+
 
 /***** END SECTION CONFIG *****/