Xhost --> xHost.

Author: drhodrid

configure

@@ -10548,7 +10548,7 @@ EOF
     OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -O3"
     if test "$fcompiler" = "ifort" ; then
       # add inlining and cpu-specific optimisations for intel
-      OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -ip -Xhost"
+      OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -ip -xHost"
     fi
 
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for malloc in -ltcmalloc" >&5

configure.in

@@ -596,7 +596,7 @@ EOF
     OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -O3"
     if test "$fcompiler" = "ifort" ; then
       # add inlining and cpu-specific optimisations for intel
-      OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -ip -Xhost"
+      OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -ip -xHost"
     fi
 
     AC_CHECK_LIB(tcmalloc,malloc,,AC_MSG_WARN([No tcmalloc support available.]))