refactor headers, especially alltypes.h, and improve C++ ABI compat

the arch-specific bits/alltypes.h.sh has been replaced with a generic
alltypes.h.in and minimal arch-specific bits/alltypes.h.in.

this commit is intended to have no functional changes except:
- exposing additional symbols that POSIX allows but does not require
- changing the C++ name mangling for some types
- fixing the signedness of blksize_t on powerpc (POSIX requires signed)
- fixing the limit macros for sig_atomic_t on x86_64
- making dev_t an unsigned type (ABI matching goal, and more logical)

in addition, some types that were wrongly defined with long on 32-bit
archs were changed to int, and vice versa; this change is
non-functional except for the possibility of making pointer types
mismatch, and only affects programs that were using them incorrectly,
and only at build-time, not runtime.

the following changes were made in the interest of moving
non-arch-specific types out of the alltypes system and into the
headers they're associated with, and also will tend to improve
application compatibility:
- netdb.h now includes netinet/in.h (for socklen_t and uint32_t)
- netinet/in.h now includes sys/socket.h and inttypes.h
- sys/resource.h now includes sys/time.h (for struct timeval)
- sys/wait.h now includes signal.h (for siginfo_t)
- langinfo.h now includes nl_types.h (for nl_item)

for the types in stdint.h:
- types which are of no interest to other headers were moved out of
  the alltypes system.
- fast types for 8- and 64-bit are hard-coded (at least for now); only
  the 16- and 32-bit ones have reason to vary by arch.

and the following types have been changed for C++ ABI purposes;
- mbstate_t now has a struct tag, __mbstate_t
- FILE's struct tag has been changed to _IO_FILE
- DIR's struct tag has been changed to __dirstream
- locale_t's struct tag has been changed to __locale_struct
- pthread_t is defined as unsigned long in C++ mode only
- fpos_t now has a struct tag, _G_fpos64_t
- fsid_t's struct tag has been changed to __fsid_t
- idtype_t has been made an enum type (also required by POSIX)
- nl_catd has been changed from long to void *
- siginfo_t's struct tag has been removed
- sigset_t's has been given a struct tag, __sigset_t
- stack_t has been given a struct tag, sigaltstack
- suseconds_t has been changed to long on 32-bit archs
- [u]intptr_t have been changed from long to int rank on 32-bit archs
- dev_t has been made unsigned

summary of tests that have been performed against these changes:
- nsz's libc-test (diff -u before and after)
- C++ ABI check symbol dump (diff -u before, after, glibc)
- grepped for __NEED, made sure types needed are still in alltypes
- built gcc 3.4.6

1 files changed, 65 insertions, 0 deletions

diff --git a/include/alltypes.h.in b/include/alltypes.h.in
new file mode 100644
index 00000000..b2454365
--- /dev/null
+++ b/include/alltypes.h.in
@@ -0,0 +1,65 @@
+TYPEDEF unsigned _Addr size_t;
+TYPEDEF unsigned _Addr uintptr_t;
+TYPEDEF _Addr ptrdiff_t;
+TYPEDEF _Addr ssize_t;
+TYPEDEF _Addr intptr_t;
+
+TYPEDEF signed char     int8_t;
+TYPEDEF short           int16_t;
+TYPEDEF int             int32_t;
+TYPEDEF _Int64          int64_t;
+TYPEDEF _Int64          intmax_t;
+TYPEDEF unsigned char   uint8_t;
+TYPEDEF unsigned short  uint16_t;
+TYPEDEF unsigned int    uint32_t;
+TYPEDEF unsigned _Int64 uint64_t;
+TYPEDEF unsigned _Int64 uintmax_t;
+
+TYPEDEF unsigned mode_t;
+TYPEDEF unsigned nlink_t;
+TYPEDEF _Int64 off_t;
+TYPEDEF unsigned _Int64 ino_t;
+TYPEDEF unsigned _Int64 dev_t;
+TYPEDEF long blksize_t;
+TYPEDEF _Int64 blkcnt_t;
+TYPEDEF unsigned _Int64 fsblkcnt_t;
+TYPEDEF unsigned _Int64 fsfilcnt_t;
+
+TYPEDEF unsigned long wctype_t;
+
+TYPEDEF void * timer_t;
+TYPEDEF int clockid_t;
+TYPEDEF long clock_t;
+STRUCT timeval { time_t tv_sec; suseconds_t tv_usec; };
+STRUCT timespec { time_t tv_sec; long tv_nsec; };
+
+TYPEDEF int pid_t;
+TYPEDEF unsigned id_t;
+TYPEDEF unsigned uid_t;
+TYPEDEF unsigned gid_t;
+TYPEDEF int key_t;
+TYPEDEF unsigned useconds_t;
+
+#ifdef __cplusplus
+TYPEDEF unsigned long pthread_t;
+#else
+TYPEDEF struct __pthread * pthread_t;
+#endif
+TYPEDEF int pthread_once_t;
+TYPEDEF int pthread_key_t;
+TYPEDEF int pthread_spinlock_t;
+TYPEDEF unsigned pthread_mutexattr_t;
+TYPEDEF unsigned pthread_condattr_t;
+TYPEDEF unsigned pthread_barrierattr_t;
+TYPEDEF struct { unsigned __attr[2]; } pthread_rwlockattr_t;
+
+TYPEDEF struct _IO_FILE FILE;
+
+TYPEDEF struct __locale_struct * locale_t;
+
+TYPEDEF struct __sigset_t { unsigned long __bits[128/sizeof(long)]; } sigset_t;
+
+STRUCT iovec { void *iov_base; size_t iov_len; };
+
+TYPEDEF unsigned socklen_t;
+TYPEDEF unsigned short sa_family_t;