Add LocCorr_new: another variant of LocCorr (instead of pusirobot used multistepper; some errors fixed); I hope, sometimes I will finish loccorrNG

LocCorr_new/stbimpl.c

@@ -0,0 +1,29 @@
+/*
+ * This file is part of the loccorr project.
+ * Copyright 2021 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// implementation of STB library (to accelerate compilation)
+#define STBI_NO_PSD
+#define STBI_NO_TGA
+#define STBI_NO_HDR
+#define STBI_NO_PIC
+#define STBI_NO_PNM
+
+#define STB_IMAGE_IMPLEMENTATION
+#include <stb/stb_image.h>
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include <stb/stb_image_write.h>