Stat st blocks fix 1822 (#256)

* Restores maintainer mode in the autotools (#200)

Maintainer mode should be enabled in development branches.

Also adds helpful commenting.

Add bin/switch_maint_mode
Disable maintainer mode for release.
Fix incomplete merge for stub functions in H5Fdhdfs.c

* Update configure for Restores maintainer mode in the autotools (#200).

* Update MANIFEST for switch_maint_mode script.

* Update so numbers for 1.8.22 release.

* Add so numbers changes in Makefile.ins for 1.8.22 release.

* Update pkgconfig settings with version - #218 (#223)

* Add notice of final HDFF5 1.8 release.
Add solaris 64bit alignment issue to "Known Problems".

* Update 1.8 final release notice.

* Update CMake/HDF5Examples version in bin/release

* Fixed typo in an error message. (#227)

* Remove duplicate setting (#239)

* Fixes Autotools detection of the st_blocks field in stat (#246)

* Fixes Autotools detection of the st_blocks field in stat

The Autotools and CMake will now both correctly determine if the
stat struct has the st_blocks field and set H5_HAVE_STAT_ST_BLOCKS
appropriately.

* Fixes a typo in configure.ac

* Restore lines in RELEASE.txt.

* Updated configure with reconfigure.

Co-authored-by: Dana Robinson <[email protected]>
Co-authored-by: Allen Byrne <[email protected]>
Co-authored-by: bmribler <[email protected]>

configure

@@ -26432,13 +26432,14 @@ esac
 
 
 ## ----------------------------------------------------------------------
-## Does the struct stat have the st_blocks field?  This field is not Posix.
+## Does the struct stat have the st_blocks field? This field is not POSIX.
 ##
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for st_blocks in struct stat" >&5
 $as_echo_n "checking for st_blocks in struct stat... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
+  #include <sys/stat.h>
 #ifdef FC_DUMMY_MAIN
 #ifndef FC_DUMMY_MAIN_EQ_F77
 #  ifdef __cplusplus
@@ -26450,11 +26451,10 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 int
 main ()
 {
-
+struct stat sb; sb.st_blocks=0;
   ;
   return 0;
-}[
-  #include <sys/stat.h>],[struct stat sb; sb.st_blocks=0;])
+}
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :