include <stdlib.h> when needed

[Bruno Haible]

I got warnings about a missing #include <stdlib.h> in windows-tls.c.
Some other files also need <stdlib.h>, and it should better be done explicitly
rather than implicitly or by accident.


2019-06-30  Bruno Haible  <address@hidden>

        Include <stdlib.h> when needed.
        * lib/areadlinkat.c: Include <stdlib.h>, needed for free() in at-func.c.
        * lib/faccessat.c: Likewise.
        * lib/fchmodat.c: Likewise.
        * lib/fchownat.c: Likewise.
        * lib/fstatat.c: Likewise.
        * lib/mkfifoat.c: Likewise.
        * lib/mknodat.c: Likewise.
        * lib/readlinkat.c: Likewise.
        * lib/symlinkat.c: Likewise.
        * lib/utimensat.c: Likewise.
        * lib/mkdirat.c: Likewise. Include also the specification header.

2019-06-30  Bruno Haible  <address@hidden>

        Include <stdlib.h> when needed.
        * lib/cnd.c: Include <stdlib.h>, needed for abort().
        * lib/fcntl.c: Likewise.
        * lib/mbscasestr.c: Likewise.
        * lib/mbssep.c: Likewise.
        * lib/mbsstr.c: Likewise.
        * lib/openat.c: Include <stdlib.h>, needed for free().
        * lib/windows-tls.c: Include <stdlib.h>, needed for malloc(), free(),
        abort().

0001-Include-stdlib.h-when-needed.patch
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0002-Include-stdlib.h-when-needed.patch
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