Patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de>:

Here is a cosmetic patch which corrects a few spelling problems in parts
  written by me.

  Apparently, I must have written these under the influence of ether (:-)

aclocal/canonicalize-tools.m4

@@ -55,7 +55,7 @@ else
     *)  # invalid for AC_PATH_PROG
       AC_MSG_RESULT("no")
       AC_MSG_ERROR([***]
-        [Environment variable $1 should ether]
+        [Environment variable $1 should either]
 	[be unset (preferred) or contain an absolute path])
     ;;
     esac
@@ -86,7 +86,7 @@ dnl special treatment of ranlib
     else
       AC_MSG_ERROR([***]
         [Can't figure out how to build a library index]
-	[Nether ranlib nor ar -s seem to be available] )
+	[Neither ranlib nor ar -s seem to be available] )
     fi
   fi
 

c/src/lib/libbsp/sh/gensh1/startup/bspstart.c

@@ -86,7 +86,7 @@ void bsp_start(void)
      For real boards you need to setup the hardware 
      and need to copy the vector table from rom to ram.
 
-     Depending on the board this can ether be done from inside the rom 
+     Depending on the board this can either be done from inside the rom 
      startup code, rtems startup code or here.
    */
    

configure.in

@@ -225,7 +225,7 @@ if test "$RTEMS_HAS_CPLUSPLUS" = "yes"; then
     AC_MSG_ERROR([***]
      [Inconsistency in compiler configuration:]
      [Target C compiler and Target C++ compiler]
-     [must both ether be cross compilers or native compilers]
+     [must both either be cross compilers or native compilers]
      [Hint: If building a posix bsp: LD_LIBRARY_PATH?] )
   fi
 else