pass over base layer command line parsing. do not assume debugger-style 'treat all after first non-option input as passthrough options'. most things do not want that - the debugger can still get it by doing a quick secondary parse

src/base/base_strings.c

@@ -2484,3 +2484,26 @@ str8_deserial_read_block(String8 string, U64 off, U64 size, String8 *block_out)
   *block_out = str8_substr(string, range);
   return block_out->size;
 }
+
+////////////////////////////////
+//~ rjf: Basic String Hashes
+
+#if !defined(XXH_IMPLEMENTATION)
+# define XXH_IMPLEMENTATION
+# define XXH_STATIC_LINKING_ONLY
+# include "third_party/xxHash/xxhash.h"
+#endif
+
+internal U64
+u64_hash_from_seed_str8(U64 seed, String8 string)
+{
+  U64 result = XXH3_64bits_withSeed(string.str, string.size, seed);
+  return result;
+}
+
+internal U64
+u64_hash_from_str8(String8 string)
+{
+  U64 result = u64_hash_from_seed_str8(5381, string);
+  return result;
+}