Clean up more code

- Found some bugs in LLVM compiler-rt library
- The useless LIBC_STUBS package is now deleted
- Improve the overflow checking story even further
- Get chibicc tests working in MODE=dbg mode again
- The libc/isystem/ headers now have correctly named guards

tool/lambda/lambda.mk

@@ -16,20 +16,19 @@ TOOL_LAMBDA_BINS =						\
 	$(TOOL_LAMBDA_COMS:%=%.dbg)
 
 TOOL_LAMBDA_DIRECTDEPS =					\
+	LIBC_CALLS						\
+	LIBC_FMT						\
 	LIBC_INTRIN						\
 	LIBC_LOG						\
 	LIBC_MEM						\
-	LIBC_CALLS						\
+	LIBC_NEXGEN32E						\
 	LIBC_RUNTIME						\
-	LIBC_FMT						\
+	LIBC_STDIO						\
 	LIBC_STR						\
 	LIBC_SYSV						\
-	LIBC_STDIO						\
 	LIBC_X							\
-	LIBC_STUBS						\
-	LIBC_NEXGEN32E						\
-	TOOL_LAMBDA_LIB						\
-	THIRD_PARTY_GETOPT
+	THIRD_PARTY_GETOPT					\
+	TOOL_LAMBDA_LIB
 
 TOOL_LAMBDA_DEPS :=						\
 	$(call uniq,$(foreach x,$(TOOL_LAMBDA_DIRECTDEPS),$($(x))))