Move err/warn/etc from libc to libcextra.

Author: waywardmonkeys

emcc

@@ -1446,9 +1446,6 @@ try:
          'floatscan.c',
          'shgetc.c',
         ]],
-        ['legacy', [
-         'err.c',
-        ]],
         ['math', [
          'scalbn.c',
          'scalbnl.c',
@@ -1506,6 +1503,9 @@ try:
          ['internal', [
           'intscan.c',
          ]],
+         ['legacy', [
+          'err.c',
+         ]],
          ['locale', [
           'iconv.c',
           'iswalnum_l.c',

system/lib/libc.symbols

@@ -52,8 +52,6 @@
          T atof
          W bulk_free
          W calloc
-         T err
-         T errx
          W free
          W independent_calloc
          W independent_comalloc
@@ -81,9 +79,3 @@
          T strtold
          W strtold_l
          W valloc
-         T verr
-         T verrx
-         T vwarn
-         T vwarnx
-         T warn
-         T warnx

system/lib/libcextra.symbols

@@ -22,6 +22,8 @@
          W __wctype_l
          T btowc
          T ecvt
+         T err
+         T errx
          T fcvt
          T fputwc
          W fputwc_unlocked
@@ -120,9 +122,15 @@
          T towlower_l
          T towupper
          T towupper_l
+         T verr
+         T verrx
          T vfwprintf
          T vswprintf
+         T vwarn
+         T vwarnx
          T vwprintf
+         T warn
+         T warnx
          T wcpcpy
          T wcpncpy
          T wcrtomb