Add even more of the source

This should be about everything needed to build so far?

CommonUtilitiesLib/OSHeaders.c

@@ -0,0 +1,35 @@
+#include "OSHeaders.h"
+
+#if __linux__
+    // OpenBSD strlcpy implementation to allow usage of it while on Linux.
+    /*
+     * Copy src to string dst of size siz.  At most siz-1 characters
+     * will be copied.  Always NUL terminates (unless siz == 0).
+     * Returns strlen(src); if retval >= siz, truncation occurred.
+     */
+    size_t
+    strlcpy(char *dst, const char *src, size_t siz)
+    {
+            char *d = dst;
+            const char *s = src;
+            size_t n = siz;
+
+            /* Copy as many bytes as will fit */
+            if (n != 0) {
+                    while (--n != 0) {
+                            if ((*d++ = *s++) == '\0')
+                                    break;
+                    }
+            }
+
+            /* Not enough room in dst, add NUL and traverse rest of src */
+            if (n == 0) {
+                    if (siz != 0)
+                            *d = '\0';		/* NUL-terminate dst */
+                    while (*s++)
+                            ;
+            }
+
+            return(s - src - 1);	/* count does not include NUL */
+    }
+#endif