lib: include inttypes.h to get PRIu64 & friends

Including it in lib.h allows all of the Dovecot code (as well as any
external plugins) to just use these macros without worrying about what
system headers to include.

configure.ac

@@ -328,7 +328,7 @@ AC_DEFINE_UNQUOTED(DOVECOT_VERSION, "$PACKAGE_VERSION", [Dovecot version])
 AC_DEFINE([DOVECOT_VERSION_MAJOR], regexp(AC_PACKAGE_VERSION, [^\([0-9]+\)\.\([0-9]+\)], [\1]), [Dovecot major version])
 AC_DEFINE([DOVECOT_VERSION_MINOR], regexp(AC_PACKAGE_VERSION, [^\([0-9]+\)\.\([0-9]+\)], [\2]), [Dovecot minor version])
 
-AC_CHECK_HEADERS(strings.h stdint.h unistd.h dirent.h malloc.h inttypes.h \
+AC_CHECK_HEADERS(strings.h stdint.h unistd.h dirent.h malloc.h \
   sys/uio.h sys/sysmacros.h sys/resource.h sys/select.h libgen.h \
   sys/quota.h sys/fs/ufs_quota.h ufs/ufs/quota.h jfs/quota.h \
   quota.h sys/fs/quota_common.h \
@@ -898,6 +898,8 @@ AC_DEFUN([AC_CHECKTYPE2], [
   $2]], [[$1 t;]])],[i_cv_type_$1=yes],[i_cv_type_$1=no])])
   AC_MSG_RESULT($i_cv_type_$1)
 ])
+dnl we require inttypes.h for PRIu{8,16,32,64} macros
+AC_CHECK_HEADER(inttypes.h,,AC_MSG_ERROR([inttypes.h missing but required]))
 
 dnl some systems don't have stdint.h, but still have some of the types
 dnl defined elsewhere

src/lib/compat.h

@@ -1,10 +1,6 @@
 #ifndef COMPAT_H
 #define COMPAT_H
 
-#if defined (HAVE_INTTYPES_H) && (defined(__osf__) || defined(_HPUX_SOURCE))
-#  include <inttypes.h>
-#endif
-
 /* well, this is obviously wrong since it assumes it's 64bit, but older
    GCCs don't define it and we really want it. */
 #ifndef LLONG_MAX

src/lib/lib.h

@@ -17,6 +17,7 @@
 #include <limits.h> /* INT_MAX, etc. */
 #include <errno.h> /* error checking is good */
 #include <sys/types.h> /* many other includes want this */
+#include <inttypes.h> /* PRI* macros */
 
 #ifdef HAVE_STDINT_H
 #  include <stdint.h> /* C99 int types, we mostly need uintmax_t */