Portability fix for HPUX

configure.in:
  Ensure that innodb gets system specific CFLAGS and CXXFLAGS
innobase/os/os0file.c:
  Don't use pread/pwrite on systems where these are not working.
  This fixes a bug on HPUX, where InnoDB didn't create the ibdata1 file correctly.

configure.in

@@ -2484,6 +2484,9 @@ AC_SUBST(netware_dir)
 AC_SUBST(linked_netware_sources)
 AM_CONDITIONAL(HAVE_NETWARE, test "$netware_dir" = "netware")
 
+# Ensure that table handlers gets all modifications to CFLAGS/CXXFLAGS
+export CC CXX CFLAGS CXXFLAGS LD LDFLAGS AR
+
 if test "$with_server" = "yes" -o "$THREAD_SAFE_CLIENT" != "no"
 then
   AC_DEFINE(THREAD)

innobase/os/os0file.c

@@ -1111,7 +1111,7 @@ os_file_pread(
 
 	os_n_file_reads++;
 
-#ifdef HAVE_PREAD
+#if defined(HAVE_PREAD) && !defined(HAVE_BROKEN_PREAD)
         os_mutex_enter(os_file_count_mutex);
 	os_file_n_pending_preads++;
         os_mutex_exit(os_file_count_mutex);
@@ -1186,7 +1186,7 @@ os_file_pwrite(
 
 	os_n_file_writes++;
 
-#ifdef HAVE_PWRITE
+#if defined(HAVE_PWRITE) && !defined(HAVE_BROKEN_PREAD)
         os_mutex_enter(os_file_count_mutex);
 	os_file_n_pending_pwrites++;
         os_mutex_exit(os_file_count_mutex);