Bump cloudlibc's version number to 0.94.

Changes:

- Added support for reading the process ID of processes from the
  runtime. The program_getuuid() function has been renamed to
  program_getpid().
- Properly deprecate all process descriptor related bits and move them
  into <program.h>.
- Rename uv_spawn() to program_spawn(), so that it doesn't clash with
  the official implementation of libuv.

src/include/_/cdefs.h

@@ -27,7 +27,7 @@
 // Version information.
 #define __cloudlibc__ 1
 #define __cloudlibc_major__ 0
-#define __cloudlibc_minor__ 93
+#define __cloudlibc_minor__ 94
 
 #ifdef __cplusplus
 #define __BEGIN_DECLS extern "C" {