Make some systemic improvements

- add vdso dump utility
- tests now log stack usage
- rename g_ftrace to __ftrace
- make internal spinlocks go faster
- add conformant c11 atomics library
- function tracing now logs stack usage
- make function call tracing thread safe
- add -X unsecure (no ssl) mode to redbean
- munmap() has more consistent behavior now
- pacify fsync() calls on python unit tests
- make --strace flag work better in redbean
- start minimizing and documenting compiler flags

tool/emacs/cosmo-c-keywords.el

@@ -99,7 +99,8 @@
            "_Vector_size"))
 
         (gnu
-         '("__inline"
+         '("__extension__"
+           "__inline"
            "__thread"
            "__alignof"
            "__typeof"