add build date macros for windows executables

Author: cthbleachbit

misc/gen_color_map.cpp

@@ -20,6 +20,9 @@ void usage() {
 	using namespace std;
 	cout << "Usage:" << endl;
 	cout << "    gen_color_map <input.txt> <output.gif>" << endl;
+#if defined(_MSC_VER)
+	printf("Executable built at %s %s", __DATE__, __TIME__);
+#endif
 }
 
 int main(int argc, char **argv) {

src/minemap.cpp

@@ -49,6 +49,9 @@ void usage() {
 	printf("\t\tOther versions are not supported yet.\n");
 	printf("\t-v, --verbose\n");
 	printf("\t\tOptional, Turn on verbose output\n");
+#if defined(_MSC_VER)
+	printf("Executable built at %s %s", __DATE__, __TIME__);
+#endif
 }
 
 int main(int argc, char **argv) {

src/pamenim.cpp

@@ -27,6 +27,9 @@ void usage() {
 	printf("\t\tOther versions are not supported yet.\n");
 	printf("\t-o, --output OUTPUT\n");
 	printf("\t\tRequired, output picture\n");
+#if defined(_MSC_VER)
+	printf("Executable built at %s %s", __DATE__, __TIME__);
+#endif
 }
 
 int main(int argc, char **argv) {