* device/lib/pic16/libc/stdio/vfprintf.c,

* device/lib/pic16/libc/stdio/vfprintf.c,
* device/lib/pic16/libc/stdio/printf_small.c,
* device/lib/pic16/libc/stdio/printf_timy.c: pop int from stack for
  char arguments, as char varargs are cast to int by the caller,
  hopefully fixes #1604915 (other device libraries are still affected)

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4511 4a8a32a2-be11-0410-ad9d-d568d2c75423