configury: Make more robust in finding NAG Fortran Compiler

The NAG Fortran check only matched "nagfor" exactly, and failed if a
path to nagfor was provided.  Also change "-pthread" into
"-Wl,-pthread".

Signed-off-by: Themos Tsikas <[email protected]>
Signed-off-by: Jeff Squyres <[email protected]>

Author: ThemosTsikas

config/ltmain_nag_pthread.diff

@@ -8,7 +8,7 @@
  	if test -n "$inherited_linker_flags"; then
 -	  tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'`
 +          case "$CC" in
-+            nagfor*)
++            *nagfor*)
 +	      tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g' | $SED 's/-pthread/-Wl,-pthread/g'`;;
 +            *)
 +	      tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'`;;