Mimic musl's upstream include path when building musl. NFC (#20944)

sbc100 · web-flow · commit 5e3e1e0f3cfd · 2024-01-03T13:48:10.000-08:00
This is not fixing any known bug but does help with an internal issue we
had at google when converting these libraries to bazel rules.
diff --git a/tools/system_libs.py b/tools/system_libs.py
@@ -876,6 +876,7 @@ class MuslInternalLibrary(Library):
   includes = [
     'system/lib/libc/musl/src/internal',
     'system/lib/libc/musl/src/include',
+    'system/lib/libc/musl/include',
     'system/lib/libc',
     'system/lib/pthread',
   ]

Original file line number	Diff line number	Diff line change
`@@ -876,6 +876,7 @@ class MuslInternalLibrary(Library):`
`876`	`876`	`includes = [`
`877`	`877`	`'system/lib/libc/musl/src/internal',`
`878`	`878`	`'system/lib/libc/musl/src/include',`
	`879`	`+ 'system/lib/libc/musl/include',`
`879`	`880`	`'system/lib/libc',`
`880`	`881`	`'system/lib/pthread',`
`881`	`882`	`]`