[libc] [llvm] [libc] Remove direct math.h includes (PR #85324)

[Michael Jones via llvm-commits]

================
@@ -62,7 +62,17 @@ config_setting(
     flag_values = {":mpfr": "system"},
 )
 
-############################## Support libraries #############################
+################################# Include Files ################################
+
+libc_support_library(
+    name = "internal_includes",
----------------
michaelrj-google wrote:

Ah, I see what you mean by this overlapping with other libraries, I'll see about un-globbing the macro headers.

What do you mean by the libc build being high maintenance? Which sections would you suggest making a glob? 

https://github.com/llvm/llvm-project/pull/85324